MESON Chess Problem Database
Problem Display
PID: 160754 (2B5/1N6/rR6/2Rqk1K1/1P6/P2PBpp1/1b3PP1/4Q3 w - - 0 1)
Williams, Philip Hamilton
English Mechanic and World of Science, 1904
(First published on Fri Feb 26 1904)
#2
12 + 6
| 15351 | SCPF/BCPS Black Books | 2017 |
| 15239 | Valois Notebooks | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rxa3
- 2.Re6#
- 1...Ra4
- 2.Re6#
- 1...Ra5
- 2.Re6#
- 1...Ra7
- 2.Re6#
- 1...Ra8
- 2.Re6#
- 1...Ba1
- 2.Qxa1#
- 1...Bc1
- 2.Qc3#
- 1...Bxa3
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Bd4
- 2.Bf4#
- 1...fxg2
- 2.f4#
- 1...gxf2
- 2.Bxf2#
- 1...Rxa3
- Tries
- 1.Sa5?
- threat
- 2.Sc4#
- 1...Rxa5
- 2.Re6#
- 1...Qxc5!
- threat
- 1.Sd6?
- threat
- 2.Sc4#
- 2.Sf7#
- 1...Ra7
- 2.Sc4#
- 1...Qxc5!
- threat
- 1.Sd8?
- threat
- 2.Sf7#
- 1...Ra7
- 2.Re6#
- 1...Qxc5!
- threat
- 1.Rd6?
- threat
- 2.Rcxd5#
- 2.Rdxd5#
- 1...Qxc5
- 2.Bd4#
- 2.Bf4#
- 2.Bxc5#
- 1...Ra5
- 2.Rdxd5#
- 2.Re6#
- 1...Rxd6!
- threat
- 1.Qc1?
- threat
- 2.Qxb2#
- 1...Qxc5
- 2.Qxc5#
- 1...Rxa3
- 2.Re6#
- 1...Bxa3
- 2.Qc3#
- 1...Ba1
- 2.Qxa1#
- 1...Bc3
- 2.Qxc3#
- 1...Bd4
- 2.Bf4#
- 1...Bxc1!
- threat
- 1.fxg3?
- threat
- 2.Bg1#
- 2.Bf2#
- 1...Bc1
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Bd4
- 2.Bf4#
- 1...f2
- 2.Bxf2#
- 1...Qxc5!
- threat
- 1.d4+?
- 1...Bxd4
- 2.Bf4#
- 1...Ke4+!
- 1...Bxd4
- 1.Sa5?
- Keys
- 1.Rcb5!
- 1...Qxb5
- 2.Rxb5#
- 1...Rxa3
- 2.Re6#
- 1...Rxb6
- 2.Bxb6#
- 1...Bxa3
- 2.Qc3#
- 1...fxg2
- 2.f4#
- 1...gxf2
- 2.Bxf2#
- 1...Qc5
- 2.Rxc5#
- 1...Ra4
- 2.Re6#
- 1...Ra5
- 2.Re6#
- 1...Ra7
- 2.Re6#
- 1...Ra8
- 2.Re6#
- 1...Ba1
- 2.Qxa1#
- 1...Bc1
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Bd4
- 2.Bf4#
- 1...Qxb5
- 1.Rcb5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD,XP(D)::R1(J)
- R(f);N_GUARD::R1(J)
- B(a);OGATEB::QAB(A),XB(a)
- B(a);N_GUARD,P_PINB(F)::QAB(A)
- B(a);N_GUARD,XP(D)::QAB(A)
- B(a);N_GUARD::QAB(A),XB(a)
- B(a);SBLOCK::QAR(A)+B(F),DCHECK
- P(b);OGATE,XP(C)::P(B)
- P(c);OGATE,XP(B)::QAR(A)+B(F),XP(c)
- Tries
- Try
- S(K);
- Threat
- S(K)
- Vars
- R(f);N_GUARD,XS(K)::R1(J)
- Refutation
- Q(d);N_SPINQ(d),XR(H)
- Try
- S(K);
- Threat
- DUALS(2)
- Vars
- R(f);::S(K)
- Refutation
- Q(d);N_SPINQ(d),XR(H)
- Try
- S(K);
- Threat
- S(K)
- Vars
- R(f);N_GUARD::R1(J)
- Refutation
- Q(d);N_SPINQ(d),XR(H)
- Try
- R(J);
- Threat
- DUALS(2)
- Refutation
- R(f);XR(J)
- Try
- Q(A);
- Threat
- QAB(A),XB(a)
- Vars
- Q(d);N_SPINQ(d),OGATE,XR(H)::QAR2(A),XQ(d)
- R(f);N_GUARD,XP(D)::R1(J)
- B(a);N_GUARD,XP(D)::QAB(A)
- B(a);OGATEB::QAB(A),XB(a)
- B(a);N_GUARD::QAB(A),XB(a)
- B(a);SBLOCK::B(F)
- Refutation
- B(a);P_PINB(F),XQ(A)
- Try
- P(B);XP(c)
- Threat
- DUALS(2)
- Vars
- B(a);N_GUARD,P_PINB(F)::QAB(A)
- B(a);N_GUARD::QAB(A),XB(a)
- B(a);SBLOCK::QAR(A)+B(F),DCHECK
- P(b);::QAR(A)+B(F),XP(b)
- Refutation
- Q(d);N_SPINQ(d),XR(H)
- Try
- P(E);CHECK
- Vars
- B(a);SBLOCK,XP(E)::QAR(A)+B(F),DCHECK
- Refutation
- K(e);CHECK,N_SPINQ(d),P-FLIGHT
- Try
- Actual
- R(H);
- Vars
- Q(d);N_SPINQ(d),OGATE,XR(H)::R(J),XQ(d)
- R(f);N_GUARD,XP(D)::R1(J)
- R(f);OGATE,XR(J)::QAR(A)+B(F),XR(f)
- B(a);N_GUARD,XP(D)::QAB(A)
- P(b);OGATE,XP(C)::P(B)
- P(c);OGATE,XP(B)::QAR(A)+B(F),XP(c)
- Q(d);OGATEB::R(H),XQ(d)
- R(f);N_GUARD::R1(J)
- B(a);OGATEB::QAB(A),XB(a)
- B(a);N_GUARD,P_PINB(F)::QAB(A)
- B(a);N_GUARD::QAB(A),XB(a)
- B(a);SBLOCK::QAR(A)+B(F),DCHECK
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