MESON Chess Problem Database
Problem Display
PID: 72163 (B7/1r6/bN3Bn1/1p1R4/1p2k3/1nrR2P1/4PK2/8 w - - 0 1)
Lewis, Robert Tony
Chess, 1952
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Re3#
- 1...Rc2
- 2.Re3#
- 1...Rxd3
- 2.exd3#
- 1...Rc4
- 2.Re3#
- 1...Rc5
- 2.Re3#
- 1...Rc6
- 2.Re3#
- 1...Rcc7
- 2.Re3#
- 1...Rc8
- 2.Re3#
- 1...Rxb6
- 2.Re5#
- 1...Ra7
- 2.Re5#
- 1...Rbc7
- 2.Re5#
- 1...Rd7
- 2.Re5#
- 1...Re7
- 2.Re5#
- 1...Rf7
- 2.Re5#
- 1...Rg7
- 2.Re5#
- 1...Rh7
- 2.Re5#
- 1...Rb8
- 2.Re5#
- 1...Sa1
- 2.R3d4#
- 1...Sc1
- 2.R3d4#
- 1...Sd2
- 2.R3d4#
- 1...Sd4
- 2.R3xd4#
- 1...Sa5
- 2.R3d4#
- 1...Sc5
- 2.R3d4#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...Rc1
- Tries
- 1.Bxc3?
- threat
- 2.Re3#
- 1...Se5
- 2.Rxe5#
- 1...Rf7+!
- threat
- 1.Bxb7?
- threat
- 2.Re5#
- 1...Rxd3
- 2.exd3#
- 1...Se5
- 2.Rxe5#
- 1...Rc6
- 2.Re3#
- 1...Bxb7!
- threat
- 1.Rg5?
- 1...Rc1
- 2.Re3#
- 1...Rc2
- 2.Re3#
- 1...Rc4
- 2.Re3#
- 1...Rc5
- 2.Re3#
- 1...Rc6
- 2.Re3#
- 1...Rc7
- 2.Re3#
- 1...Rc8
- 2.Re3#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...Rxd3!
- 1...Rc1
- 1.Rh5?
- 1...Rc1
- 2.Re3#
- 1...Rc2
- 2.Re3#
- 1...Rc4
- 2.Re3#
- 1...Rc5
- 2.Re3#
- 1...Rc6
- 2.Re3#
- 1...Rc7
- 2.Re3#
- 1...Rc8
- 2.Re3#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Sf4
- 2.Re5#
- 1...Sh4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Se7
- 2.Re5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...Rxd3!
- 1...Rc1
- 1.Bxc3?
- Keys
- 1.Rf3!
- 1...Rxf3+
- 2.exf3#
- 1...Rxb6
- 2.Rd4#
- 1...Rc1
- 2.Re3#
- 1...Rc2
- 2.Re3#
- 1...Rd3
- 2.exd3#
- 1...Re3
- 2.Rxe3#
- 1...Rc4
- 2.Re3#
- 1...Rc5
- 2.Re3#
- 1...Rc6
- 2.Re3#
- 1...Rcc7
- 2.Re3#
- 1...Rc8
- 2.Re3#
- 1...Ra7
- 2.Rd4#
- 1...Rbc7
- 2.Rd4#
- 1...Rd7
- 2.Rd4#
- 1...Re7
- 2.Rd4#
- 1...Rf7
- 2.Rd4#
- 1...Rg7
- 2.Rd4#
- 1...Rh7
- 2.Rd4#
- 1...Rb8
- 2.Rd4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Sf4
- 2.Rxf4#
- 1...Sh4
- 2.Rf4#
- 1...Se5
- 2.Rf4#
- 1...Se7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...Rxf3+
- 1.Rf3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 21
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(b);N_GUARD::R1(C)
- R(b);N_GUARD,P_PINP(A)::R1(C)
- R(b);OGATE,XR(C)::P(A),XR(b)
- R(h);XS(F)::B(H)+R(E),DCHECK
- R(h);::B(H)+R(E),DCHECK
- R(h);P_PINB(G)::B(H)+R(E),DCHECK
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- S(g);N_GUARD::R1(E)
- S(g);N_GUARD::R1(E),XS(g)
- Tries
- Try
- B(G);XR(b)
- Threat
- R1(C)
- Vars
- S(g);N_GUARD::R1(E),XS(g)
- Refutation
- R(h);CHECK
- Try
- B(H);XR(h)
- Threat
- B(H)+R(E),DCHECK
- Vars
- R(b);OGATE,XR(C)::P(A),XR(b)
- S(g);::B(H)+R(E),DCHECK,XS(g)
- R(b);N_GUARD::R1(C)
- Refutation
- B(f);XB(H)
- Try
- R(E);P_PINR(h)
- Vars
- R(b);N_GUARD::R1(C)
- R(b);N_GUARD,P_PINP(A)::R1(C)
- R(b);N_GUARD,N_SPINR(h)::R1(C)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- S(g);N_GUARD::R1(E)
- S(g);N_GUARD::R1(E),XS(g)
- Refutation
- R(b);XR(C)
- Try
- R(E);P_PINR(h)
- Vars
- R(b);N_GUARD::R1(C)
- R(b);N_GUARD,P_PINP(A)::R1(C)
- R(b);N_GUARD,N_SPINR(h)::R1(C)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- S(g);N_GUARD::R1(E)
- S(g);N_GUARD::R1(E),XS(g)
- Refutation
- R(b);XR(C)
- Try
- Actual
- R(C);
- Vars
- R(b);CHECK,OGATE,XR(C)::P(A),XR(b)
- R(h);XS(F)::B(H)+R(E),DCHECK
- R(b);N_GUARD::R1(C)
- R(b);N_GUARD,P_PINP(A)::R1(C)
- R(b);OGATE::P(A),XR(b)
- R(b);N_GUARD::R1(C),XR(b)
- R(h);::B(H)+R(E),DCHECK
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD::R1(E),XS(a)
- S(g);N_GUARD::R1(C),XS(g)
- S(g);N_GUARD::R1(C)
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