MESON Chess Problem Database
Problem Display
PID: 163091 (6n1/4p1p1/2N1pbBn/1p5Q/1RbB1k2/3Rp2P/p6P/K7 w - - 0 1)
Bonavia-Hunt, Rev Noel Aubrey
The Observer, 1925
(First published on Sun Mar 8 1925)
#2
9 + 11
| 15239 | Valois Notebooks | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Bb3
- 2.Be5#
- 1...Bxd3
- 2.Be5#
- 1...Bd5
- 2.Be5#
- 1...Bxd4+
- 2.Rxd4#
- 1...Bh4
- 2.Bxe3#
- 2.Be5#
- 1...Be5
- 2.Bxe5#
- 1...Bg5
- 2.Bxe3#
- 2.Be5#
- 1...Sg4
- 2.Qxg4#
- 1...Sf5
- 2.Qg4#
- 1...Sf7
- 2.Qg4#
- 1...e2
- 2.Rf3#
- 1...e5
- 2.Bxe3#
- 1...Bb3
- Tries
- 1.Sa5?
- 1...Bxd4+
- 2.Rxd4#
- 1...Bxd3
- 2.Be5#
- 1...Sg4
- 2.Qxg4#
- 1...Sf5
- 2.Qg4#
- 1...Bb3
- 2.Be5#
- 1...Bd5
- 2.Be5#
- 1...Bh4
- 2.Bxe3#
- 2.Be5#
- 1...Be5
- 2.Bxe5#
- 1...Sf7
- 2.Qg4#
- 1...e2
- 2.Rf3#
- 1...e5
- 2.Bxe3#
- 1...Bg5!
- 1...Bxd4+
- 1.Sa7?
- 1...Bxd4+
- 2.Rxd4#
- 1...Bxd3
- 2.Be5#
- 1...Sg4
- 2.Qxg4#
- 1...Sf5
- 2.Qg4#
- 1...Bb3
- 2.Be5#
- 1...Bd5
- 2.Be5#
- 1...Bh4
- 2.Bxe3#
- 2.Be5#
- 1...Be5
- 2.Bxe5#
- 1...Sf7
- 2.Qg4#
- 1...e2
- 2.Rf3#
- 1...e5
- 2.Bxe3#
- 1...Bg5!
- 1...Bxd4+
- 1.Sb8?
- 1...Bxd4+
- 2.Rxd4#
- 1...Bxd3
- 2.Be5#
- 1...Sg4
- 2.Qxg4#
- 1...Sf5
- 2.Qg4#
- 1...Bb3
- 2.Be5#
- 1...Bd5
- 2.Be5#
- 1...Bh4
- 2.Bxe3#
- 2.Be5#
- 1...Be5
- 2.Bxe5#
- 1...Sf7
- 2.Qg4#
- 1...e2
- 2.Rf3#
- 1...e5
- 2.Bxe3#
- 1...Bg5!
- 1...Bxd4+
- 1.Sd8?
- 1...Bxd4+
- 2.Rxd4#
- 1...Bxd3
- 2.Sxe6#
- 2.Be5#
- 1...Sg4
- 2.Qxg4#
- 1...Sf5
- 2.Qg4#
- 1...Bb3
- 2.Be5#
- 1...Bd5
- 2.Be5#
- 1...Bh4
- 2.Bxe3#
- 2.Be5#
- 1...Be5
- 2.Bxe5#
- 1...Sf7
- 2.Qg4#
- 1...e2
- 2.Rf3#
- 1...e5
- 2.Bxe3#
- 1...Bg5!
- 1...Bxd4+
- 1.Bxf6?
- threat
- 2.Be5#
- 2.Bg5#
- 2.Rd4#
- 1...exf6
- 2.Rd4#
- 1...gxf6
- 2.Rd4#
- 1...Sg4
- 2.Qxg4#
- 1...Sf5
- 2.Qg4#
- 1...Sf7
- 2.Rd4#
- 2.Qg4#
- 1...e2
- 2.Be5#
- 2.Bg5#
- 2.Rf3#
- 2.Qf3#
- 2.Qe5#
- 2.Qg5#
- 1...e5
- 2.Bxe5#
- 2.Bg5#
- 1...Sxf6!
- threat
- 1.Ra3?
- 1...Sg4
- 2.Qxg4#
- 1...Sf5
- 2.Qg4#
- 1...Bg5
- 2.Bxe3#
- 2.Be5#
- 1...Bf1
- 2.Be5#
- 1...Be2
- 2.Be5#
- 1...Bb3
- 2.Be5#
- 1...Bd3
- 2.Be5#
- 1...Bd5
- 2.Be5#
- 1...Bh4
- 2.Bxe3#
- 2.Be5#
- 1...Be5
- 2.Bxe5#
- 1...Sf7
- 2.Qg4#
- 1...e2
- 2.Rf3#
- 1...e5
- 2.Bxe3#
- 1...Bxd4+!
- 1...Sg4
- 1.Rdb3?
- 1...Bxb3
- 2.Be5#
- 1...Sg4
- 2.Qxg4#
- 1...Sf5
- 2.Qg4#
- 1...Bg5
- 2.Bxe3#
- 2.Be5#
- 1...Bf1
- 2.Be5#
- 1...Be2
- 2.Be5#
- 1...Bd3
- 2.Be5#
- 1...Bd5
- 2.Be5#
- 1...Bh4
- 2.Bxe3#
- 2.Be5#
- 1...Be5
- 2.Bxe5#
- 1...Sf7
- 2.Qg4#
- 1...e2
- 2.Rf3#
- 1...e5
- 2.Bxe3#
- 1...Bxd4+!
- 1...Bxb3
- 1.Rc3?
- threat
- 2.Bxe3#
- 1...Sg4
- 2.Qxg4#
- 1...Sf5
- 2.Qg4#
- 1...Bd3
- 2.Be5#
- 1...e2
- 2.Be3#
- 2.Rf3#
- 1...Bxd4!
- threat
- 1.Rb2?
- threat
- 2.Bxe3#
- 1...Bxd4
- 2.Rxd4#
- 1...Sg4
- 2.Qxg4#
- 1...Sf5
- 2.Qg4#
- 1...e2
- 2.Be3#
- 2.Rf3#
- 1...Bxd3!
- threat
- 1.Rxc4?
- threat
- 2.Be5#
- 1...Bxd4+
- 2.Rdxd4#
- 2.Rcxd4#
- 1...Sg4
- 2.Qxg4#
- 1...Be5
- 2.Bxe5#
- 1...e5
- 2.Bxe3#
- 2.Bxe5#
- 1...bxc4!
- threat
- 1.Sa5?
- Keys
- 1.Se5!
- threat
- 2.Bxe3#
- 1...Bxd3
- 2.Sxd3#
- 1...Bxe5
- 2.Bxe5#
- 1...Sf5
- 2.Qg4#
- 1...Bg5
- 2.Qf3#
- 1...Sg4
- 2.Qxg4#
- 1...e2
- 2.Be3#
- 2.Rf3#
- threat
- 1.Se5!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- B(c);::R(E)+B(F),DCHECK
- B(c);XR(C)::R(E)+B(F),DCHECK
- B(g);CHECK,OGATE,XB(F)::R(C),XB(g)
- B(g);N_GUARD::B(F),XB(g)
- S(h);N_GUARD::QAR1(G),XS(h)
- S(h);N_GUARD::QAR1(G)
- P(b);OGATE::R1(C)
- P(f);N_PINB(F)::B(F),XP(b)
- Tries
- Try
- S(H);
- Vars
- B(g);CHECK,OGATE,XB(F)::R(C),XB(g)
- B(c);XR(C)::R(E)+B(F),DCHECK
- S(h);N_GUARD::QAR1(G),XS(h)
- S(h);N_GUARD::QAR1(G)
- B(c);::R(E)+B(F),DCHECK
- B(g);N_GUARD::B(F),XB(g)
- P(b);OGATE::R1(C)
- P(f);N_PINB(F)::B(F),XP(b)
- Refutation
- B(g);N_PINB(F)
- Try
- S(H);
- Vars
- B(g);CHECK,OGATE,XB(F)::R(C),XB(g)
- B(c);XR(C)::R(E)+B(F),DCHECK
- S(h);N_GUARD::QAR1(G),XS(h)
- S(h);N_GUARD::QAR1(G)
- B(c);::R(E)+B(F),DCHECK
- B(g);N_GUARD::B(F),XB(g)
- P(b);OGATE::R1(C)
- P(f);N_PINB(F)::B(F),XP(b)
- Refutation
- B(g);N_PINB(F)
- Try
- S(H);
- Vars
- B(g);CHECK,OGATE,XB(F)::R(C),XB(g)
- B(c);XR(C)::R(E)+B(F),DCHECK
- S(h);N_GUARD::QAR1(G),XS(h)
- S(h);N_GUARD::QAR1(G)
- B(c);::R(E)+B(F),DCHECK
- B(g);N_GUARD::B(F),XB(g)
- P(b);OGATE::R1(C)
- P(f);N_PINB(F)::B(F),XP(b)
- Refutation
- B(g);N_PINB(F)
- Try
- S(H);
- Vars
- B(g);CHECK,OGATE,XB(F)::R(C),XB(g)
- S(h);N_GUARD::QAR1(G),XS(h)
- S(h);N_GUARD::QAR1(G)
- B(c);::R(E)+B(F),DCHECK
- B(g);N_GUARD::B(F),XB(g)
- P(b);OGATE::R1(C)
- P(f);N_PINB(F)::B(F),XP(b)
- Refutation
- B(g);N_PINB(F)
- Try
- B(F);N_SPINB(F),P_PINB(c),XB(g)
- Threat
- DUALS(3)
- Vars
- P(i);XB(F)::R(C)
- P(j);XB(F)::R(C)
- S(h);N_GUARD::QAR1(G),XS(h)
- S(h);N_GUARD::QAR1(G)
- Refutation
- S(k);XB(F)
- Try
- R(C);
- Vars
- S(h);N_GUARD::QAR1(G),XS(h)
- S(h);N_GUARD::QAR1(G)
- B(c);::R(E)+B(F),DCHECK
- B(g);N_GUARD::B(F),XB(g)
- P(b);OGATE::R1(C)
- P(f);N_PINB(F)::B(F),XP(b)
- Refutation
- B(g);CHECK,XB(F)
- Try
- R(C);
- Vars
- B(c);XR(C)::R(E)+B(F),DCHECK
- S(h);N_GUARD::QAR1(G),XS(h)
- S(h);N_GUARD::QAR1(G)
- B(c);::R(E)+B(F),DCHECK
- B(g);N_GUARD::B(F),XB(g)
- P(b);OGATE::R1(C)
- P(f);N_PINB(F)::B(F),XP(b)
- Refutation
- B(g);CHECK,XB(F)
- Try
- R(C);N_SPINB(F)
- Threat
- B(F),XP(b)
- Vars
- S(h);N_GUARD::QAR1(G),XS(h)
- S(h);N_GUARD::QAR1(G)
- B(c);::R(E)+B(F),DCHECK
- Refutation
- B(g);P_PINR(C),XB(F)
- Try
- R(E);N_SPINB(F)
- Threat
- B(F),XP(b)
- Vars
- B(g);OGATE,P_PINR(E),XB(F)::R(C),XB(g)
- S(h);N_GUARD::QAR1(G),XS(h)
- S(h);N_GUARD::QAR1(G)
- Refutation
- B(c);XR(C)
- Try
- R(E);XB(c)
- Threat
- R(E)+B(F),DCHECK
- Vars
- S(h);N_GUARD::QAR1(G),XS(h)
- B(g);::R(E)+B(F),DCHECK,XB(g)
- Refutation
- P(e);XR(E)
- Try
- Actual
- S(H);N_SPINB(F)
- Threat
- B(F),XP(b)
- Vars
- B(c);XR(C)::S(H),XB(c)
- B(g);OGATE,P_PINB(F),XS(H)::B(F),XB(g)
- S(h);N_GUARD::QAR1(G)
- B(g);SBLOCK::QAR1(G)
- S(h);N_GUARD::QAR1(G),XS(h)
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