MESON Chess Problem Database
Problem Display
PID: 76731 (2r5/8/7Q/6R1/2kn4/B3PB1b/1R2PK2/8 w - - 0 1)
Sedgwick, Stanley
The Chess Problem, 1947
#2
8 + 4
SOLUTION
- SOUND
- Sets
- 1...Rc5
- 2.Rxc5#
- 1...Ra8
- 2.Rc5#
- 1...Rb8
- 2.Rc5#
- 1...Rd8
- 2.Rc5#
- 1...Re8
- 2.Rc5#
- 1...Rf8
- 2.Rc5#
- 1...Rg8
- 2.Rc5#
- 1...Rh8
- 2.Rc5#
- 1...Sb3
- 2.Rc2#
- 1...Sc6
- 2.Rc5#
- 1...Rc5
- Tries
- 1.Qg7?
- threat
- 2.Qxd4#
- 1...Kc3
- 2.Qxd4#
- 1...Sxe2
- 2.Bxe2#
- 1...Sxf3
- 2.Rb4#
- 1...Rd8
- 2.Rc5#
- 1...Sc2
- 2.Bd5#
- 1...Sb3
- 2.Rc2#
- 1...Sb5
- 2.Bd5#
- 2.Rb4#
- 1...Sc6
- 2.Bd5#
- 2.Rc5#
- 1...Se6
- 2.Bd5#
- 2.Rb4#
- 1...Sf5!
- threat
- 1.Qh4?
- threat
- 2.Qxd4#
- 1...Kc3
- 2.Qxd4#
- 1...Rd8
- 2.Rc5#
- 1...Bg4!
- threat
- 1.Qa6+?
- 1...Kc3
- 2.Qd3#
- 1...Sb5!
- 1...Kc3
- 1.Qb6?
- threat
- 2.Qxd4#
- 2.Qb4#
- 1...Kc3
- 2.Qxd4#
- 2.Qb4#
- 1...Sxe2
- 2.Qb3#
- 1...Sxf3
- 2.Rc2#
- 2.Qb3#
- 2.Qb4#
- 1...Rc5
- 2.Rxc5#
- 2.Qxc5#
- 2.Qb4#
- 1...Rb8
- 2.Rc5#
- 2.Qxd4#
- 2.Qc5#
- 1...Rd8
- 2.Rc5#
- 2.Qc5#
- 2.Qb4#
- 1...Sc2
- 2.Rxc2#
- 2.Qb3#
- 1...Sb3
- 2.Rc2#
- 2.Qxb3#
- 2.Qb4#
- 1...Sf5
- 2.Rc2#
- 2.Qb3#
- 2.Qb4#
- 1...Sc6
- 2.Rc2#
- 2.Rc5#
- 2.Qc5#
- 2.Qb3#
- 1...Se6
- 2.Rc2#
- 2.Qb3#
- 2.Qb4#
- 1...Sb5!
- threat
- 1.Qc6+?
- 1...Sxc6
- 2.Rc5#
- 1...Rxc6!
- 1...Sxc6
- 1.Qd6?
- threat
- 2.Qb4#
- 2.Qxd4#
- 1...Kc3
- 2.Qb4#
- 2.Qxd4#
- 1...Sxf3
- 2.Qb4#
- 2.Qd3#
- 1...Sb5
- 2.Qb4#
- 2.Qd3#
- 1...Rc5
- 2.Rxc5#
- 2.Qxc5#
- 2.Qxd4#
- 1...Rb8
- 2.Rc5#
- 2.Qc5#
- 2.Qxd4#
- 1...Rd8
- 2.Rc5#
- 2.Qb4#
- 2.Qc5#
- 1...Sc2
- 2.Qd3#
- 1...Sb3
- 2.Rc2#
- 2.Qb4#
- 2.Qd3#
- 1...Sf5
- 2.Qb4#
- 2.Qd3#
- 1...Sc6
- 2.Rc5#
- 2.Qc5#
- 2.Qd3#
- 1...Se6
- 2.Qb4#
- 2.Qd3#
- 1...Sxe2!
- threat
- 1.Qf6?
- threat
- 2.Qxd4#
- 1...Kc3
- 2.Qxd4#
- 1...Sxe2
- 2.Bxe2#
- 1...Sxf3
- 2.Rb4#
- 1...Sb5
- 2.Bd5#
- 2.Rb4#
- 1...Rd8
- 2.Rc5#
- 1...Sc2
- 2.Bd5#
- 1...Sb3
- 2.Rc2#
- 1...Sc6
- 2.Bd5#
- 2.Rc5#
- 1...Se6
- 2.Bd5#
- 2.Rb4#
- 1...Sf5!
- threat
- 1.Qg7?
- Keys
- 1.Qh8!
- threat
- 2.Qxd4#
- 1...Kc3
- 2.Qxd4#
- 1...Rxh8
- 2.Rc5#
- 1...Sxe2
- 2.Bxe2#
- 1...Sxf3
- 2.Rb4#
- 1...Sf5
- 2.Qxc8#
- 1...Rd8
- 2.Rc5#
- 1...Sc2
- 2.Bd5#
- 1...Sb3
- 2.Rc2#
- 1...Sb5
- 2.Bd5#
- 2.Rb4#
- 1...Sc6
- 2.Bd5#
- 2.Rc5#
- 1...Se6
- 2.Bd5#
- 2.Rb4#
- threat
- 1.Qh8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 7
- Sets
- R(d);N_GUARD::R1(G),XR(d)
- R(d);N_GUARD::R1(G)
- R(d);N_GUARD,P_PINB(F)::R1(G)
- S(c);N_GUARD,SBLOCK::R(A)
- S(c);S_CUTR(d)::R1(G)
- Tries
- Try
- Q(H);
- Threat
- QAR1(H),XS(c)
- Vars
- K(b);P-FLIGHT,P_SPINS(c)::QAB1(H),XS(c)
- S(c);OGATE,XP(B)::B(F),XS(c)
- S(c);XB(F)::R1(A)
- R(d);N_GUARD::R1(G)
- S(c);::B(F)
- S(c);N_GUARD,SBLOCK::R(A)
- Refutation
- S(c);
- Try
- Q(H);P_PINS(c)
- Threat
- QAR1(H),XS(c)
- Vars
- K(b);N_SPINS(c),P-FLIGHT::QAB1(H),XS(c)
- R(d);N_GUARD::R1(G)
- Refutation
- B(a);N_SPINS(c)
- Try
- Q(H);CHECK
- Vars
- K(b);OGATE,P-FLIGHT::QAR1(H)
- Refutation
- S(c);P_SPINS(c)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD,XP(B)::QAB1(H)
- Refutation
- S(c);
- Try
- Q(H);CHECK
- Vars
- S(c);XQ(H)::R1(G)
- Refutation
- R(d);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- S(c);OGATE::QAB1(H)
- Refutation
- S(c);XP(B)
- Try
- Q(H);
- Threat
- QAR1(H),XS(c)
- Vars
- K(b);P-FLIGHT,P_SPINS(c)::QAB1(H),XS(c)
- S(c);OGATE,XP(B)::B(F),XS(c)
- S(c);XB(F)::R1(A)
- R(d);N_GUARD::R1(G)
- S(c);::B(F)
- S(c);N_GUARD,SBLOCK::R(A)
- Refutation
- S(c);
- Try
- Actual
- Q(H);
- Threat
- QAR1(H),XS(c)
- Vars
- K(b);P-FLIGHT,P_SPINS(c)::QAB1(H),XS(c)
- R(d);N_GUARD,XQ(H)::R1(G)
- S(c);OGATE,XP(B)::B(F),XS(c)
- S(c);XB(F)::R1(A)
- S(c);N_GUARD,S_CUTB(a)::QAR(H),XR(d)
- R(d);N_GUARD::R1(G)
- S(c);::B(F)
- S(c);N_GUARD,SBLOCK::R(A)
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