MESON Chess Problem Database
Problem Display
PID: 184271 (B7/N5BK/pR6/P1p5/p1kr2p1/Q2Np2p/7q/5nbn w - - 0 1)
Bernard, Henry D'Oyly
The Observer, 1928
(First published on Sun Mar 25 1928)
#2
8 + 12
| 15239 | Valois Notebooks | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qg3
- 2.Sb2#
- 1...Qf4
- 2.Sb2#
- 1...Qe5
- 2.Sb2#
- 2.Sxe5#
- 1...Qd6
- 2.Sb2#
- 1...Qc7
- 2.Sb2#
- 1...Qb8
- 2.Sb2#
- 1...Qa2
- 2.Se5#
- 1...Qb2
- 2.Sxb2#
- 2.Se5#
- 1...Qd2
- 2.Se5#
- 1...Qe2
- 2.Se5#
- 1...Qf2
- 2.Se5#
- 1...Qg2
- 2.Se5#
- 1...Rxd3
- 2.Qxa4#
- 1...Re4
- 2.Qc3#
- 1...Rf4
- 2.Qc3#
- 1...Rd5
- 2.Qc3#
- 1...Rd6
- 2.Qc3#
- 1...Rd7
- 2.Qc3#
- 1...Rd8
- 2.Qc3#
- 1...Bf2
- 2.Sb2#
- 1...Sd2
- 2.Sb2#
- 1...Sfg3
- 2.Se5#
- 1...Sf2
- 2.Sb2#
- 1...Shg3
- 2.Se5#
- 1...e2
- 2.Sb2#
- 1...g3
- 2.Se5#
- 1...Qg3
- Tries
- 1.Sc8?
- 1...Rxd3
- 2.Qxa4#
- 1...Qg3
- 2.Sb2#
- 1...Qf4
- 2.Sb2#
- 1...Qe5
- 2.Sb2#
- 2.Sxe5#
- 1...Qd6
- 2.Sb2#
- 1...Qc7
- 2.Sb2#
- 1...Qb8
- 2.Sb2#
- 1...Qa2
- 2.Se5#
- 1...Qb2
- 2.Sxb2#
- 2.Se5#
- 1...Qd2
- 2.Se5#
- 1...Qe2
- 2.Se5#
- 1...Qf2
- 2.Se5#
- 1...Qg2
- 2.Se5#
- 1...Re4
- 2.Qc3#
- 1...Rf4
- 2.Sd6#
- 2.Qc3#
- 1...Rd5
- 2.Qc3#
- 1...Rd6
- 2.Qc3#
- 1...Rd7
- 2.Qc3#
- 1...Rd8
- 2.Qc3#
- 1...Bf2
- 2.Sb2#
- 1...Sd2
- 2.Sb2#
- 1...Sfg3
- 2.Se5#
- 1...Sf2
- 2.Sb2#
- 1...Shg3
- 2.Se5#
- 1...e2
- 2.Sb2#
- 1...g3
- 2.Se5#
- 1...Qc2!
- 1...Rxd3
- 1.Be4?
- threat
- 2.Qxc5#
- 1...Rxd3
- 2.Qxd3#
- 2.Qxa4#
- 1...Qe5
- 2.Sb2#
- 2.Sxe5#
- 2.Qc1#
- 1...Qd6
- 2.Sb2#
- 2.Qc1#
- 1...Qc7
- 2.Sb2#
- 2.Qc1#
- 1...Rd5
- 2.Qc3#
- 2.Qxa4#
- 1...Rxe4!
- threat
- 1.Bd5+?
- 1...Rxd5
- 2.Qc3#
- 1...Kxd5!
- 1...Rxd5
- 1.Bc6?
- 1...Rxd3
- 2.Qxa4#
- 1...Qg3
- 2.Sb2#
- 1...Qf4
- 2.Sb2#
- 1...Qe5
- 2.Sb2#
- 2.Sxe5#
- 1...Qd6
- 2.Sb2#
- 1...Qc7
- 2.Sb2#
- 1...Qb8
- 2.Sb2#
- 1...Qa2
- 2.Se5#
- 1...Qb2
- 2.Sxb2#
- 2.Se5#
- 1...Qd2
- 2.Se5#
- 1...Qe2
- 2.Se5#
- 1...Qf2
- 2.Se5#
- 1...Qg2
- 2.Se5#
- 1...Re4
- 2.Qc3#
- 1...Rf4
- 2.Qc3#
- 1...Rd5
- 2.Qc3#
- 1...Rd6
- 2.Qc3#
- 1...Rd7
- 2.Qc3#
- 1...Rd8
- 2.Qc3#
- 1...Bf2
- 2.Sb2#
- 1...Sd2
- 2.Sb2#
- 1...Sfg3
- 2.Se5#
- 1...Sf2
- 2.Sb2#
- 1...Shg3
- 2.Se5#
- 1...e2
- 2.Sb2#
- 1...g3
- 2.Se5#
- 1...Qc2!
- 1...Rxd3
- 1.Bb7?
- 1...Rxd3
- 2.Qxa4#
- 1...Qg3
- 2.Sb2#
- 1...Qf4
- 2.Sb2#
- 1...Qe5
- 2.Sb2#
- 2.Sxe5#
- 1...Qd6
- 2.Sb2#
- 1...Qc7
- 2.Sb2#
- 1...Qb8
- 2.Sb2#
- 1...Qa2
- 2.Se5#
- 1...Qb2
- 2.Sxb2#
- 2.Se5#
- 1...Qd2
- 2.Se5#
- 1...Qe2
- 2.Se5#
- 1...Qf2
- 2.Se5#
- 1...Qg2
- 2.Se5#
- 1...Re4
- 2.Qc3#
- 1...Rf4
- 2.Qc3#
- 1...Rd5
- 2.Bxa6#
- 2.Qc3#
- 1...Rd6
- 2.Qc3#
- 1...Rd7
- 2.Qc3#
- 1...Rd8
- 2.Qc3#
- 1...Bf2
- 2.Sb2#
- 1...Sd2
- 2.Sb2#
- 1...Sfg3
- 2.Se5#
- 1...Sf2
- 2.Sb2#
- 1...Shg3
- 2.Se5#
- 1...e2
- 2.Sb2#
- 1...g3
- 2.Se5#
- 1...Qc2!
- 1...Rxd3
- 1.Rb1?
- 1...Rxd3
- 2.Qxa4#
- 1...Qg3
- 2.Sb2#
- 2.Rc1#
- 1...Qf4
- 2.Sb2#
- 2.Rc1#
- 1...Qe5
- 2.Sb2#
- 2.Sxe5#
- 2.Rc1#
- 1...Qd6
- 2.Sb2#
- 2.Rc1#
- 1...Qc7
- 2.Sb2#
- 2.Rc1#
- 1...Qb8
- 2.Rc1#
- 1...Qa2
- 2.Se5#
- 1...Qb2
- 2.Sxb2#
- 2.Se5#
- 1...Qd2
- 2.Se5#
- 1...Qe2
- 2.Se5#
- 1...Qf2
- 2.Se5#
- 1...Qg2
- 2.Se5#
- 1...Re4
- 2.Qc3#
- 1...Rf4
- 2.Qc3#
- 1...Rd5
- 2.Qc3#
- 1...Rd6
- 2.Qc3#
- 1...Rd7
- 2.Qc3#
- 1...Rd8
- 2.Qc3#
- 1...Bf2
- 2.Sb2#
- 2.Rc1#
- 1...Sd2
- 2.Sb2#
- 2.Rc1#
- 1...Sfg3
- 2.Se5#
- 1...Sf2
- 2.Sb2#
- 2.Rc1#
- 1...Shg3
- 2.Se5#
- 1...e2
- 2.Sb2#
- 2.Rc1#
- 1...g3
- 2.Se5#
- 1...Qc2!
- 1...Rxd3
- 1.Rb3?
- threat
- 2.Rc3#
- 2.Qxa4#
- 1...Rxd3
- 2.Qxa4#
- 1...Qc2
- 2.Qxa4#
- 1...Qb8
- 2.Sb2#
- 2.Rc3#
- 1...Qa2
- 2.Se5#
- 2.Rc3#
- 1...Qb2
- 2.Sxb2#
- 2.Se5#
- 2.Qxa4#
- 1...Qd2
- 2.Se5#
- 1...axb3!
- threat
- 1.Rb5?
- threat
- 2.Rxc5#
- 1...Qe5
- 2.Sb2#
- 2.Sxe5#
- 1...Qd6
- 2.Sb2#
- 1...Qc7
- 2.Sb2#
- 1...Rd5
- 2.Qc3#
- 1...axb5!
- threat
- 1.Rd6?
- 1...Qxd6
- 2.Sb2#
- 1...Rxd3
- 2.Qxa4#
- 1...Rxd6
- 2.Qc3#
- 1...Qg3
- 2.Sb2#
- 1...Qf4
- 2.Sb2#
- 1...Qe5
- 2.Sb2#
- 2.Sxe5#
- 1...Qa2
- 2.Se5#
- 1...Qb2
- 2.Sxb2#
- 2.Se5#
- 1...Qd2
- 2.Se5#
- 1...Qe2
- 2.Se5#
- 1...Qf2
- 2.Se5#
- 1...Qg2
- 2.Se5#
- 1...Re4
- 2.Bd5#
- 2.Qc3#
- 2.Qxa4#
- 1...Rf4
- 2.Se5#
- 2.Bd5#
- 2.Qc3#
- 2.Qxa4#
- 1...Rd5
- 2.Bxd5#
- 2.Qc3#
- 1...Bf2
- 2.Sb2#
- 1...Sd2
- 2.Sb2#
- 1...Sfg3
- 2.Se5#
- 1...Sf2
- 2.Sb2#
- 1...Shg3
- 2.Se5#
- 1...e2
- 2.Sb2#
- 1...g3
- 2.Se5#
- 1...Qc2!
- 1...Qxd6
- 1.Rg6?
- 1...Rxd3
- 2.Qxa4#
- 1...Qc2
- 2.Se5#
- 1...Qg3
- 2.Sb2#
- 1...Qf4
- 2.Sb2#
- 1...Qe5
- 2.Sb2#
- 2.Sxe5#
- 1...Qd6
- 2.Sb2#
- 1...Qc7
- 2.Sb2#
- 1...Qa2
- 2.Se5#
- 1...Qb2
- 2.Sxb2#
- 2.Se5#
- 1...Qd2
- 2.Se5#
- 1...Qe2
- 2.Se5#
- 1...Qf2
- 2.Se5#
- 1...Qg2
- 2.Se5#
- 1...Re4
- 2.Qc3#
- 1...Rf4
- 2.Qc3#
- 1...Rd5
- 2.Qc3#
- 1...Rd6
- 2.Qc3#
- 1...Rd7
- 2.Qc3#
- 1...Rd8
- 2.Qc3#
- 1...Bf2
- 2.Sb2#
- 1...Sd2
- 2.Sb2#
- 1...Sfg3
- 2.Se5#
- 1...Sf2
- 2.Sb2#
- 1...Shg3
- 2.Se5#
- 1...e2
- 2.Sb2#
- 1...g3
- 2.Se5#
- 1...Qb8!
- 1...Rxd3
- 1.Qc1+?
- 1...Qc2
- 2.Qxc2#
- 1...Kxd3!
- 1...Qc2
- 1.Sc8?
- Keys
- 1.Rb2!
- 1...Qxb2
- 2.Sxb2#
- 2.Se5#
- 1...Rxd3
- 2.Qxa4#
- 1...Qc2
- 2.Rxc2#
- 1...Qg3
- 2.Rc2#
- 1...Qf4
- 2.Rc2#
- 1...Qe5
- 2.Sxe5#
- 2.Rc2#
- 1...Qd6
- 2.Rc2#
- 1...Qc7
- 2.Rc2#
- 1...Qb8
- 2.Rc2#
- 1...Qd2
- 2.Se5#
- 1...Qe2
- 2.Se5#
- 1...Qf2
- 2.Se5#
- 1...Qg2
- 2.Se5#
- 1...Re4
- 2.Qc3#
- 1...Rf4
- 2.Qc3#
- 1...Rd5
- 2.Qc3#
- 1...Rd6
- 2.Qc3#
- 1...Rd7
- 2.Qc3#
- 1...Rd8
- 2.Qc3#
- 1...Bf2
- 2.Rc2#
- 1...Sd2
- 2.Rc2#
- 1...Sfg3
- 2.Se5#
- 1...Sf2
- 2.Rc2#
- 1...Shg3
- 2.Se5#
- 1...e2
- 2.Rc2#
- 1...g3
- 2.Se5#
- 1...Qxb2
- 1.Rb2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 9
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(d);N_GUARD::S(B)
- Q(d);N_GUARD,P_PINB(F)::S(B)
- R(i);SBLOCK,XS(B)::QAR2(A),XP(g)
- R(i);::QAR1(A)
- R(i);P_PINB(F)::QAR1(A)
- B(b);S_CUTQ(d)::S(B)
- S(a);S_CUTQ(d)::S(B)
- S(c);S_CUTQ(d)::S(B)
- P(e);S_CUTQ(d)::S(B)
- P(j);S_CUTQ(d)::S(B)
- Tries
- Try
- S(E);
- Vars
- R(i);SBLOCK,XS(B)::QAR2(A),XP(g)
- Q(d);N_GUARD::S(B)
- Q(d);N_GUARD,P_PINB(F)::S(B)
- R(i);::QAR1(A)
- R(i);P_PINB(F)::QAR1(A)
- B(b);S_CUTQ(d)::S(B)
- S(a);S_CUTQ(d)::S(B)
- S(c);S_CUTQ(d)::S(B)
- P(e);S_CUTQ(d)::S(B)
- P(j);S_CUTQ(d)::S(B)
- Refutation
- Q(d);P_PINS(B)
- Try
- B(H);
- Threat
- QAR1(A),XP(k)
- Refutation
- R(i);XB(H)
- Try
- B(H);CHECK
- Vars
- R(i);SBLOCK,XB(H)::QAR1(A)
- Refutation
- K(h);S_FLIGHT,XB(H)
- Try
- B(H);
- Vars
- R(i);SBLOCK,XS(B)::QAR2(A),XP(g)
- Q(d);N_GUARD::S(B)
- Q(d);N_GUARD,P_PINB(F)::S(B)
- R(i);::QAR1(A)
- R(i);P_PINB(F)::QAR1(A)
- B(b);S_CUTQ(d)::S(B)
- S(a);S_CUTQ(d)::S(B)
- S(c);S_CUTQ(d)::S(B)
- P(e);S_CUTQ(d)::S(B)
- P(j);S_CUTQ(d)::S(B)
- Refutation
- Q(d);P_PINS(B)
- Try
- B(H);
- Vars
- R(i);SBLOCK,XS(B)::QAR2(A),XP(g)
- Q(d);N_GUARD::S(B)
- Q(d);N_GUARD,P_PINB(F)::S(B)
- R(i);::QAR1(A)
- R(i);P_PINB(F)::QAR1(A)
- B(b);S_CUTQ(d)::S(B)
- S(a);S_CUTQ(d)::S(B)
- S(c);S_CUTQ(d)::S(B)
- P(e);S_CUTQ(d)::S(B)
- P(j);S_CUTQ(d)::S(B)
- Refutation
- Q(d);P_PINS(B)
- Try
- R(D);
- Vars
- R(i);SBLOCK,XS(B)::QAR2(A),XP(g)
- Q(d);N_GUARD::R(D)
- Q(d);N_GUARD::S(B)
- R(i);::QAR1(A)
- R(i);P_PINB(F)::QAR1(A)
- S(a);S_CUTQ(d)::S(B)
- S(c);S_CUTQ(d)::S(B)
- P(j);S_CUTQ(d)::S(B)
- Refutation
- Q(d);P_PINS(B)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- R(i);XS(B)::QAR2(A),XP(g)
- Q(d);P_PINS(B)::QAR2(A),XP(g)
- Q(d);N_GUARD::S(B)
- Refutation
- P(g);XR(D)
- Try
- R(D);
- Threat
- R1(D),XP(k)
- Vars
- Q(d);N_GUARD::S(B)
- Q(d);N_GUARD,P_PINB(F)::S(B)
- R(i);::QAR1(A)
- Refutation
- P(l);XR(D)
- Try
- R(D);
- Vars
- Q(d);N_GUARD,XR(D)::S(B)
- R(i);XS(B)::QAR2(A),XP(g)
- R(i);XR(D)::QAR1(A)
- Q(d);N_GUARD::S(B)
- B(b);S_CUTQ(d)::S(B)
- S(a);S_CUTQ(d)::S(B)
- S(c);S_CUTQ(d)::S(B)
- P(e);S_CUTQ(d)::S(B)
- P(j);S_CUTQ(d)::S(B)
- Refutation
- Q(d);P_PINS(B)
- Try
- R(D);
- Vars
- R(i);SBLOCK,XS(B)::QAR2(A),XP(g)
- Q(d);N_GUARD::S(B)
- Q(d);N_GUARD,P_PINB(F)::S(B)
- R(i);::QAR1(A)
- R(i);P_PINB(F)::QAR1(A)
- B(b);S_CUTQ(d)::S(B)
- S(a);S_CUTQ(d)::S(B)
- S(c);S_CUTQ(d)::S(B)
- P(e);S_CUTQ(d)::S(B)
- P(j);S_CUTQ(d)::S(B)
- Refutation
- Q(d);
- Try
- Q(A);CHECK
- Vars
- Q(d);N_GUARD,P_PINS(B),P_SPINQ(d)::QAR2(A),XQ(d)
- Refutation
- K(h);S_FLIGHT,XS(B)
- Try
- Actual
- R(D);
- Vars
- R(i);SBLOCK,XS(B)::QAR2(A),XP(g)
- Q(d);N_GUARD,P_PINS(B)::R(D),XQ(d)
- Q(d);N_GUARD::R(D)
- Q(d);N_GUARD,P_PINB(F)::R(D)
- Q(d);N_GUARD::S(B)
- R(i);::QAR1(A)
- R(i);P_PINB(F)::QAR1(A)
- B(b);S_CUTQ(d)::R(D)
- S(a);S_CUTQ(d)::R(D)
- S(a);S_CUTQ(d)::S(B)
- S(c);S_CUTQ(d)::R(D)
- S(c);S_CUTQ(d)::S(B)
- P(e);S_CUTQ(d)::R(D)
- P(j);S_CUTQ(d)::S(B)
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