MESON Chess Problem Database
Problem Display
PID: 261 (2R2K2/4p3/2P1p3/3kP1N1/1p5R/nP1N1nB1/3Q3p/5rbB w - - 0 1)
Heathcote, Godfrey
The Observer, 1950
(First published on Sun Mar 5 1950)
#2
11 + 9
| 3105 | FIDE Album (1945-1955) | 1964 |
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Bxf3#
- 1...Rb1
- 2.Bxf3#
- 1...Rc1
- 2.Bxf3#
- 1...Rd1
- 2.Bxf3#
- 1...Bf2
- 2.Bxf3#
- 1...Bc5
- 2.Sxb4#
- 1...Sc4
- 2.bxc4#
- 1...Ra1
- Tries
- 1.Sc1+?
- 1...Bd4
- 2.Qxd4#
- 1...Kc5!
- 1...Bd4
- 1.Se1+?
- 1...Bd4
- 2.Qxd4#
- 1...Kc5!
- 1...Bd4
- 1.Sb2+?
- 1...Bd4
- 2.Qxd4#
- 1...Kc5!
- 1...Bd4
- 1.Sc5+?
- 1...Bd4
- 2.Qxd4#
- 1...Kxc5!
- 1...Bd4
- 1.Bf2?
- threat
- 2.Bxf3#
- 2.Rd4#
- 1...Bxf2
- 2.Bxf3#
- 1...Re1
- 2.Rd4#
- 1...Sc2
- 2.Bxf3#
- 1...Sb5
- 2.Bxf3#
- 1...Rxf2!
- threat
- 1.Rc4?
- threat
- 2.Sf2#
- 2.Sxb4#
- 2.Rd8#
- 1...Rd1
- 2.Sxb4#
- 2.Bxf3#
- 2.Rd8#
- 1...Rf2
- 2.Sxf2#
- 2.Sxb4#
- 2.Rd8#
- 1...Bf2
- 2.Sxf2#
- 2.Sxb4#
- 2.Bxf3#
- 2.Rd8#
- 1...Be3
- 2.Sxb4#
- 2.Rd8#
- 1...Bd4
- 2.Sxb4#
- 2.Rd8#
- 1...Bc5
- 2.Sxb4#
- 2.Sxc5#
- 1...Bb6
- 2.Sxb4#
- 2.Sc5#
- 1...Ba7
- 2.Sxb4#
- 2.Sc5#
- 2.Rd8#
- 1...Sb1
- 2.Sxb4#
- 2.Rd8#
- 1...Sc2
- 2.Sxb4#
- 2.Rd8#
- 1...Sb5
- 2.Sxb4#
- 1...Sxc4!
- threat
- 1.Rd4+?
- 1...Kxd4
- 2.Rd8#
- 1...Bxd4!
- 1...Kxd4
- 1.Qc1?
- threat
- 2.Sxb4#
- 2.Rd8#
- 1...Rxc1
- 2.Bxf3#
- 1...Bc5
- 2.Qxc5#
- 1...Bb6
- 2.Sxb4#
- 1...Sc4
- 2.Qxc4#
- 2.bxc4#
- 1...Sb5
- 2.Sxb4#
- 2.Qc4#
- 1...Sc2!
- threat
- 1.Qc3?
- threat
- 2.Sxb4#
- 2.Sf4#
- 2.Rd8#
- 1...Be3
- 2.Sxb4#
- 2.Rd8#
- 1...Bd4
- 2.Sxb4#
- 2.Rxd4#
- 2.Rd8#
- 2.Qxd4#
- 1...Bc5
- 2.Sf4#
- 2.Qxc5#
- 1...Bb6
- 2.Sxb4#
- 2.Sf4#
- 1...Sc2
- 2.Sf4#
- 2.Rd8#
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 2.bxc4#
- 1...Sb5
- 2.Sxb4#
- 2.Sf4#
- 2.Qc4#
- 1...bxc3!
- threat
- 1.Qe3?
- threat
- 2.Sxb4#
- 2.Sf4#
- 2.Rd4#
- 2.Qe4#
- 1...Re1
- 2.Sxb4#
- 2.Sf4#
- 2.Bxf3#
- 2.Rd4#
- 1...Sc2
- 2.Sf4#
- 2.Qe4#
- 1...Sb5
- 2.Sxb4#
- 2.Sf4#
- 2.Qe4#
- 1...Bxe3!
- threat
- 1.Qxb4?
- threat
- 2.Qe4#
- 1...Bd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Sc4
- 2.Qxc4#
- 2.bxc4#
- 1...Re1!
- threat
- 1.Qc2?
- threat
- 2.Sxb4#
- 2.Rd8#
- 1...Bc5
- 2.Qxc5#
- 1...Bb6
- 2.Sxb4#
- 1...Sc4
- 2.Qxc4#
- 2.bxc4#
- 1...Sb5
- 2.Sxb4#
- 2.Qc4#
- 1...Sxc2!
- threat
- 1.Qe2?
- threat
- 2.Qe4#
- 1...Re1
- 2.Bxf3#
- 1...Be3!
- threat
- 1.Qf2?
- threat
- 2.Sxb4#
- 2.Bxf3#
- 2.Rd4#
- 1...Bxf2
- 2.Bxf3#
- 1...Re1
- 2.Sxb4#
- 2.Rd4#
- 1...Sc2
- 2.Bxf3#
- 1...Sb5
- 2.Sxb4#
- 2.Bxf3#
- 1...Rxf2!
- threat
- 1.Sc1+?
- Keys
- 1.Se4!
- threat
- 2.Sxb4#
- 1...Se1+
- 2.Sf6#
- 1...Sxd2+
- 2.Sf6#
- 1...Sd4+
- 2.Sf6#
- 1...Sxh4+
- 2.Sdf2#
- 1...Sxe5+
- 2.Sf4#
- 1...Sg5+
- 2.Sdf2#
- 2.Sf6#
- 1...Kd4
- 2.Rd8#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD::B(A),XS(e)
- B(b);S_CUTR(a)::B(A),XS(e)
- B(b);SBLOCK::QAR(B)+S(D),DCHECK,XP(f)
- S(d);OGATE::P(C),XS(d)
- Tries
- Try
- S(D);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR1(B),XB(b)
- Refutation
- K(g);N_SPINS(e),P-FLIGHT
- Try
- S(D);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR1(B),XB(b)
- Refutation
- K(g);N_SPINS(e),P-FLIGHT
- Try
- S(D);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR1(B),XB(b)
- Refutation
- K(g);N_SPINS(e),P-FLIGHT
- Try
- S(D);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR1(B),XB(b)
- Refutation
- K(g);N_SPINS(e),P-FLIGHT,XS(D)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- B(b);XB(E)::B(A),XS(e)
- R(a);::R1(F)
- S(d);::B(A),XS(e)
- Refutation
- R(a);XB(E)
- Try
- R(F);
- Threat
- DUALS(3)
- Vars
- S(d);::QAR(B)+S(D),DCHECK,XP(f)
- Refutation
- S(d);XR(F)
- Try
- R(F);CHECK
- Vars
- K(g);N_SPINS(e),P-FLIGHT,XR(F)::R(J)
- Refutation
- B(b);XR(F)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD,XQ(B)::B(A),XS(e)
- B(b);N_GUARD::QAR1(B),XB(b)
- B(b);::S(D),XP(f)
- Refutation
- S(d);
- Try
- Q(B);
- Threat
- DUALS(3)
- Refutation
- P(f);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(4)
- Refutation
- B(b);XQ(B)
- Try
- Q(B);XP(f)
- Threat
- QAB1(B)
- Refutation
- R(a);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(b);N_GUARD::QAR1(B),XB(b)
- B(b);::S(D),XP(f)
- Refutation
- S(d);XQ(B)
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- R(a);N_GUARD::B(A),XS(e)
- Refutation
- B(b);
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- B(b);XQ(B)::B(A),XS(e)
- S(d);::B(A),XS(e)
- Refutation
- R(a);XQ(B)
- Try
- Actual
- S(H);N_PINS(e)
- Threat
- QAR(B)+S(D),DCHECK,XP(f)
- Vars
- S(e);CHECK::B(A)+S(H),DCHECK
- S(e);CHECK,XQ(B)::B(A)+S(H),DCHECK
- S(e);CHECK,N_GUARD,XR(F)::QAR(B)+S(D)
- S(e);CHECK,SBLOCK,XP(G)::QAR(B)+S(D),DCHECK
- K(g);P-FLIGHT::R(J)
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