MESON Chess Problem Database
Problem Display
PID: 18322 (2N3NB/r6Q/2P1k1P1/R1q5/2P1B2b/2PnR3/8/1b3K2 w - - 0 1)
Whyatt, William Albert
The Times Weekly Edition, 1954
#2
12 + 6
SOLUTION
- SOUND
- Sets
- 1...Qa3
- 2.Bxd3#
- 2.Bf5#
- 1...Qxe3
- 2.Bf5#
- 1...Qb4
- 2.Bxd3#
- 2.Bf5#
- 1...Qd4
- 2.Bf5#
- 1...Qb6
- 2.Bf5#
- 1...Qd6
- 2.Bf5#
- 1...Qe7
- 2.Bxd3#
- 2.Bf5#
- 1...Qf8+
- 2.Bf5#
- 1...Qxc4
- 2.Bf5#
- 1...Qd5
- 2.cxd5#
- 1...Qf5+
- 2.Bxf5#
- 1...Qg5
- 2.Bf5#
- 1...Qh5
- 2.Bf5#
- 1...Qxc6
- 2.Bf5#
- 1...Rxa5
- 2.Qd7#
- 2.Qf7#
- 1...Ra6
- 2.Qd7#
- 2.Qf7#
- 1...Rd7
- 2.Qxd7#
- 1...Rf7+
- 2.Qxf7#
- 1...Ra8
- 2.Qd7#
- 2.Qf7#
- 1...Be7
- 2.Qf7#
- 1...Qa3
- Tries
- 1.Bxd3+?
- 1...Qe5
- 2.Rexe5#
- 2.Raxe5#
- 1...Qxe3!
- 1...Qe5
- 1.Rxc5?
- threat
- 2.Bxd3#
- 2.Bf5#
- 1...Rf7+
- 2.Bf5#
- 2.Qxf7#
- 1...Se5
- 2.Rxe5#
- 1...Bf2
- 2.Bf5#
- 2.Qh3#
- 1...Bg3
- 2.Bf5#
- 2.Qh3#
- 1...Bg5
- 2.Bf5#
- 2.Qh3#
- 1...Bf6
- 2.Bf5#
- 2.Qh3#
- 1...Sc1
- 2.Bxb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bf5#
- 2.Re5#
- 1...Se1
- 2.Bxb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bf5#
- 2.Re5#
- 1...Sb2
- 2.Bxb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bf5#
- 2.Re5#
- 1...Sf2
- 2.Bf5#
- 2.Re5#
- 1...Sb4
- 2.Bxb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bf5#
- 2.Re5#
- 1...Sf4
- 2.Bxb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bf5#
- 2.Re5#
- 1...Sxc5!
- threat
- 1.Qh5?
- threat
- 2.Bd5#
- 2.Bf5#
- 1...Qf8+
- 2.Bf5#
- 1...Qf5+
- 2.Bxf5#
- 2.Qxf5#
- 1...Rf7+
- 2.Bf5#
- 1...Qxh5
- 2.Bf5#
- 1...Qxc6
- 2.Bf5#
- 2.Qg4#
- 2.Qf5#
- 1...Se5
- 2.Qf5#
- 1...Qd5
- 2.Bxd5#
- 2.Bf5#
- 2.Qxd5#
- 2.cxd5#
- 1...Qg5
- 2.Bf5#
- 1...Bg5!
- threat
- 1.Bxd3+?
- Keys
- 1.g7!
- threat
- 2.Bd5#
- 1...Qf8+
- 2.gxf8S#
- 1...Qf5+
- 2.Qxf5#
- 1...Rf7+
- 2.Bf5#
- 1...Ke5
- 2.Qf5#
- 1...Kf7
- 2.Bg6#
- 1...Qxe3
- 2.Qf5#
- 1...Qxc6
- 2.Qf5#
- 1...Se5
- 2.Qf5#
- 1...Qd5
- 2.Bxd5#
- threat
- 1.g7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- Q(d);XR(C)::B(E)
- Q(d);::R(C)+B(E),DCHECK
- Q(d);CHECK::R(C)+B(E),DCHECK
- Q(d);XP(D)::R(C)+B(E),DCHECK
- Q(d);OGATE::P(D),XQ(d)
- Q(d);CHECK::R(C)+B(E),DCHECK,XQ(d)
- Q(d);XP(G)::R(C)+B(E),DCHECK
- R(f);N_GUARD::QAB1(I),XR(f)
- R(f);CHECK,N_GUARD::QAB1(I),XR(f)
- B(c);S_CUTR(f)::QAB1(I)
- Tries
- Try
- B(E);CHECK,XS(b)
- Refutation
- Q(d);XR(C)
- Try
- R(F);XQ(d)
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::R1(F),XS(b)
- Refutation
- S(b);XR(F)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK::R(C)+B(E),DCHECK
- R(f);CHECK::R(C)+B(E),DCHECK
- Q(d);XQ(I)::R(C)+B(E),DCHECK
- S(b);S_CUTQ(d)::QAB1(I)
- Q(d);::R(C)+B(E),DCHECK
- Refutation
- B(c);
- Try
- Actual
- P(H);
- Threat
- R(C)+B(E),DCHECK
- Vars
- Q(d);CHECK,OGATE::PXQ(d)=S
- Q(d);CHECK,N_GUARD::QAB1(I),XQ(d)
- R(f);CHECK,SBLOCK::R(C)+B(E),DCHECK
- K(e);P-FLIGHT,P_SPINQ(d)::QAR1(I)
- K(e);S_FLIGHT::B(E)
- Q(d);N_GUARD,XR(C)::QAB1(I)
- Q(d);N_GUARD,XP(G)::QAB1(I)
- S(b);S_CUTQ(d)::QAB1(I)
- Q(d);::R(C)+B(E),DCHECK,XQ(d)
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