MESON Chess Problem Database
Problem Display
PID: 269551 (4N1BK/3p2RP/4p2B/1n3k1P/2p2rN1/3P1p1P/3Q2nq/b3R3 w - - 0 1)
Gray, Robert
British Chess Magazine, 1934
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Rg5#
- 2.Rf7#
- 2.Qg5#
- 1...Re4
- 2.Qg5#
- 2.dxe4#
- 1...Rxg4
- 2.hxg4#
- 1...Be5
- 2.Rxe5#
- 1...Bxg7+
- 2.Sxg7#
- 1...Sa3
- 2.Sd6#
- 1...Sc3
- 2.Sd6#
- 2.Re5#
- 2.Rg5#
- 2.Rf7#
- 1...Sd4
- 2.Sd6#
- 2.Re5#
- 2.Rg5#
- 2.Rf7#
- 1...Sd6
- 2.Sxd6#
- 1...Sa7
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...c3
- 2.Re5#
- 2.Rg5#
- 2.Rf7#
- 1...e5
- 2.Rg5#
- 1...d5
- 2.Bxe6#
- 1...d6
- 2.Bxe6#
- 1...Rd4
- Tries
- 1.Se5?
- threat
- 2.Rg5#
- 2.Rf7#
- 1...Sxe1
- 2.Rg5#
- 1...Re4
- 2.Rg5#
- 2.Qg5#
- 1...Se3
- 2.Rg5#
- 1...Qg3
- 2.Rf7#
- 1...Rg4
- 2.Rf7#
- 2.hxg4#
- 1...Sd6
- 2.Rg5#
- 1...Bxe5!
- threat
- 1.Qc3?
- threat
- 2.Re5#
- 2.Rg5#
- 2.Rf7#
- 1...Qxh3
- 2.Re5#
- 2.Rg5#
- 1...Rxg4
- 2.Rf7#
- 2.hxg4#
- 1...Sxe1
- 2.Se3#
- 2.Rg5#
- 2.Rf7#
- 1...Rd4
- 2.Rf7#
- 1...Re4
- 2.Rf7#
- 2.dxe4#
- 1...Se3
- 2.Sxe3#
- 2.Rg5#
- 2.Rf7#
- 1...Sd6
- 2.Sxd6#
- 2.Re5#
- 2.Rg5#
- 1...e5
- 2.Rxe5#
- 2.Rg5#
- 1...d6
- 2.Bxe6#
- 2.Rg5#
- 2.Rf7#
- 1...Bxc3!
- threat
- 1.Qb2?
- threat
- 2.Re5#
- 2.Rg5#
- 2.Rf7#
- 1...Qxh3
- 2.Re5#
- 2.Rg5#
- 1...Rxg4
- 2.Rf7#
- 2.hxg4#
- 1...Sxe1
- 2.Se3#
- 2.Rg5#
- 2.Rf7#
- 1...Rd4
- 2.Rf7#
- 1...Re4
- 2.Rf7#
- 2.dxe4#
- 1...Se3
- 2.Sxe3#
- 2.Rg5#
- 2.Rf7#
- 1...Sd6
- 2.Sxd6#
- 2.Re5#
- 2.Rg5#
- 1...e5
- 2.Rxe5#
- 2.Rg5#
- 1...d6
- 2.Bxe6#
- 2.Rg5#
- 2.Rf7#
- 1...Bxb2!
- threat
- 1.Se5?
- Keys
- 1.Qa5!
- threat
- 2.Sd6#
- 1...Bxg7+
- 2.Sxg7#
- 1...Rxg4
- 2.hxg4#
- 1...Rd4
- 2.Rf7#
- 1...Re4
- 2.dxe4#
- 1...Be5
- 2.Rxe5#
- 1...e5
- 2.Rg5#
- 1...d5
- 2.Bxe6#
- 1...d6
- 2.Sxd6#
- 2.Bxe6#
- threat
- 1.Qa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(f);OGATE,XS(E)::P(D),XR(f)
- B(a);N_GUARD::R1(A),XB(a)
- B(a);CHECK,XR(H)::S(J),XB(a)
- S(g);N_GUARD::S(J)
- S(g);N_GUARD::S(J),XS(g)
- P(i);N_PINR(H)::R1(H)
- P(j);N_GUARD::B(K),XP(i)
- Tries
- Try
- S(E);N_SPINR(H)
- Threat
- DUALS(2)
- Vars
- S(b);XR(A)::R1(H)
- S(b);::R1(H)
- Q(c);::R(H)
- S(g);::R1(H)
- Refutation
- B(a);P_PINR(H),XS(E)
- Try
- Q(B);N_SPINR(H)
- Threat
- DUALS(3)
- Vars
- R(f);::R(H)
- Refutation
- B(a);P_PINR(H),XQ(B)
- Try
- Q(B);N_SPINR(H)
- Threat
- DUALS(3)
- Vars
- R(f);::R(H)
- Refutation
- B(a);P_PINR(H),XQ(B)
- Try
- Actual
- Q(B);P_PINS(g)
- Threat
- S(J)
- Vars
- B(a);CHECK,XR(H)::S(J),XB(a)
- R(f);OGATE,XS(E)::P(D),XR(f)
- R(f);N_PINR(H)::R(H)
- R(f);OGATE::P(C),XR(f)
- B(a);N_GUARD,N_SPINS(g)::R1(A),XB(a)
- P(i);N_PINR(H),N_SPINS(g)::R1(H)
- P(j);N_GUARD,N_SPINS(g)::B(K),XP(i)
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