MESON Chess Problem Database
Problem Display
PID: 53813 (n2Rn3/8/B1k5/1RPN4/4r3/3N4/1K1P4/8 w - - 0 1)
Andrade, Barry Jack da Costa
Chess, 1942
#2
8 + 4
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.S3b4#
- 1...Re2
- 2.S3b4#
- 1...Re3
- 2.S3b4#
- 1...Ra4
- 2.Se5#
- 1...Rb4+
- 2.S3xb4#
- 1...Rc4
- 2.Se5#
- 1...Rd4
- 2.Se5#
- 1...Rf4
- 2.Se5#
- 1...Rg4
- 2.Se5#
- 1...Rh4
- 2.Se5#
- 1...Re5
- 2.S3b4#
- 2.Sxe5#
- 1...Re6
- 2.S3b4#
- 1...Re7
- 2.S3b4#
- 1...Sb6
- 2.Rxb6#
- 1...Sac7
- 2.Rb6#
- 1...Sd6
- 2.Rxd6#
- 1...Sf6
- 2.Rd6#
- 1...Sec7
- 2.Rd6#
- 1...Sg7
- 2.Rd6#
- 1...Re1
- Tries
- 1.Kb1?
- 1...Rb4+
- 2.S3xb4#
- 1...Sd6
- 2.Rxd6#
- 1...Re2
- 2.S3b4#
- 1...Re3
- 2.S3b4#
- 1...Ra4
- 2.Se5#
- 1...Rc4
- 2.Se5#
- 1...Rd4
- 2.Se5#
- 1...Rf4
- 2.Se5#
- 1...Rg4
- 2.Se5#
- 1...Rh4
- 2.Se5#
- 1...Re5
- 2.S3b4#
- 2.Sxe5#
- 1...Re6
- 2.S3b4#
- 1...Re7
- 2.S3b4#
- 1...Sb6
- 2.Rxb6#
- 1...Sac7
- 2.Rb6#
- 1...Sf6
- 2.Rd6#
- 1...Sec7
- 2.Rd6#
- 1...Sg7
- 2.Rd6#
- 1...Re1+!
- 1...Rb4+
- 1.Ka2?
- 1...Sd6
- 2.Rxd6#
- 1...Re1
- 2.S3b4#
- 1...Re2
- 2.S3b4#
- 1...Re3
- 2.S3b4#
- 1...Rb4
- 2.S3xb4#
- 2.Se5#
- 1...Rc4
- 2.Se5#
- 1...Rd4
- 2.Se5#
- 1...Rf4
- 2.Se5#
- 1...Rg4
- 2.Se5#
- 1...Rh4
- 2.Se5#
- 1...Re5
- 2.S3b4#
- 2.Sxe5#
- 1...Re6
- 2.S3b4#
- 1...Re7
- 2.S3b4#
- 1...Sb6
- 2.Rxb6#
- 1...Sac7
- 2.Rb6#
- 1...Sf6
- 2.Rd6#
- 1...Sec7
- 2.Rd6#
- 1...Sg7
- 2.Rd6#
- 1...Ra4+!
- 1...Sd6
- 1.Kc2?
- 1...Sd6
- 2.Rxd6#
- 1...Re1
- 2.S3b4#
- 1...Re2
- 2.S3b4#
- 1...Re3
- 2.S3b4#
- 1...Ra4
- 2.Se5#
- 1...Rb4
- 2.S3xb4#
- 2.Se5#
- 1...Rd4
- 2.Se5#
- 1...Rf4
- 2.Se5#
- 1...Rg4
- 2.Se5#
- 1...Rh4
- 2.Se5#
- 1...Re5
- 2.S3b4#
- 2.Sxe5#
- 1...Re6
- 2.S3b4#
- 1...Re7
- 2.S3b4#
- 1...Sb6
- 2.Rxb6#
- 1...Sac7
- 2.Rb6#
- 1...Sf6
- 2.Rd6#
- 1...Sec7
- 2.Rd6#
- 1...Sg7
- 2.Rd6#
- 1...Rc4+!
- 1...Sd6
- 1.Kb3?
- 1...Rb4+
- 2.S3xb4#
- 1...Sd6
- 2.Rxd6#
- 1...Re1
- 2.S3b4#
- 1...Re2
- 2.S3b4#
- 1...Ra4
- 2.Se5#
- 1...Rc4
- 2.Se5#
- 1...Rd4
- 2.Se5#
- 1...Rf4
- 2.Se5#
- 1...Rg4
- 2.Se5#
- 1...Rh4
- 2.Se5#
- 1...Re5
- 2.S3b4#
- 2.Sxe5#
- 1...Re6
- 2.S3b4#
- 1...Re7
- 2.S3b4#
- 1...Sb6
- 2.Rxb6#
- 1...Sac7
- 2.Rb6#
- 1...Sf6
- 2.Rd6#
- 1...Sec7
- 2.Rd6#
- 1...Sg7
- 2.Rd6#
- 1...Re3!
- 1...Rb4+
- 1.Rbb8?
- threat
- 2.Bb5#
- 1...Sd6
- 2.Rxd6#
- 1...Sb6
- 2.Rxb6#
- 1...Sac7
- 2.Rb6#
- 1...Sec7
- 2.Rd6#
- 1...Rb4+!
- threat
- 1.Kb1?
- Keys
- 1.Rb7!
- 1...Rb4+
- 2.S5xb4#
- 1...Sd6
- 2.Rxd6#
- 1...Re3
- 2.S5b4#
- 1...Re1
- 2.S5b4#
- 1...Re2
- 2.S5b4#
- 1...Ra4
- 2.Se7#
- 1...Rc4
- 2.Se7#
- 1...Rd4
- 2.Se7#
- 1...Rf4
- 2.Se7#
- 1...Rg4
- 2.Se7#
- 1...Rh4
- 2.Se7#
- 1...Re5
- 2.S5b4#
- 1...Re6
- 2.S5b4#
- 1...Re7
- 2.S5b4#
- 2.Sxe7#
- 1...Sb6
- 2.Rxb6#
- 1...Sac7
- 2.Rb6#
- 1...Sf6
- 2.Rd6#
- 1...Sec7
- 2.Rd6#
- 1...Sg7
- 2.Rd6#
- 1...Rb4+
- 1.Rb7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 11
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(a);N_GUARD::S(C)
- R(a);N_GUARD,P_PINP(B)::S(C)
- R(a);CHECK,N_GUARD::S(C),XR(a)
- S(c);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R1(D)
- S(d);N_GUARD::R1(H),XS(d)
- S(d);N_GUARD::R1(H)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- R(a);CHECK,N_GUARD::S(C),XR(a)
- S(d);N_GUARD::R1(H),XS(d)
- R(a);N_GUARD::S(C)
- S(c);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R1(D)
- S(d);N_GUARD::R1(H)
- Refutation
- R(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- S(d);N_GUARD::R1(H),XS(d)
- R(a);N_GUARD::S(C)
- R(a);N_GUARD,P_PINP(B)::S(C)
- S(c);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R1(D)
- S(d);N_GUARD::R1(H)
- Refutation
- R(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- S(d);N_GUARD::R1(H),XS(d)
- R(a);N_GUARD::S(C)
- R(a);N_GUARD,P_PINP(B)::S(C)
- S(c);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R1(D)
- S(d);N_GUARD::R1(H)
- Refutation
- R(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- R(a);CHECK,N_GUARD::S(C),XR(a)
- S(d);N_GUARD::R1(H),XS(d)
- R(a);N_GUARD::S(C)
- S(c);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R1(D)
- S(d);N_GUARD::R1(H)
- Refutation
- R(a);P_PINS(C)
- Try
- R(D);
- Threat
- B(G)
- Vars
- S(d);N_GUARD::R1(H),XS(d)
- S(c);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R1(D)
- S(d);N_GUARD::R1(H)
- Refutation
- R(a);CHECK
- Try
- Actual
- R(D);
- Vars
- R(a);CHECK,N_GUARD::S(F),XR(a)
- S(d);N_GUARD::R1(H),XS(d)
- R(a);N_GUARD::S(F)
- R(a);N_GUARD,P_PINP(B)::S(F)
- S(c);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R1(D)
- S(d);N_GUARD::R1(H)
Developed and maintained by Brian Stephenson.
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