MESON Chess Problem Database
Problem Display
PID: 265524 (BBQR4/8/K3N2r/PP1p4/3pkP1N/2n1p3/4P1r1/1b3R2 w - - 0 1)
Wirtanen, Erkki Aukusti
Die Schwalbe, 1972
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxh4
- 2.Sc5#
- 1...Rh5
- 2.Sc5#
- 1...Rxe6+
- 2.Qxe6#
- 1...Rh7
- 2.Sc5#
- 1...Rh8
- 2.Sc5#
- 1...Sd1
- 2.Bxd5#
- 1...Sa2
- 2.Bxd5#
- 1...Sa4
- 2.Bxd5#
- 1...Sxb5
- 2.Bxd5#
- 1...d3
- 2.Qc4#
- 1...Rxh4
- Tries
- 1.Bc6?
- threat
- 2.Sc5#
- 1...Rxe6
- 2.Qxe6#
- 1...Sa4
- 2.Bxd5#
- 1...d3!
- threat
- 1.Bd6?
- threat
- 2.Sc5#
- 1...Rxe6
- 2.Qxe6#
- 1...d3
- 2.Qc4#
- 1...Sa4!
- threat
- 1.Rxd5?
- threat
- 2.Rxd4#
- 2.Re5#
- 1...Rxe6+
- 2.Qxe6#
- 1...Rxe2
- 2.Rxd4#
- 1...Rxh4
- 2.Sc5#
- 2.Re5#
- 1...Sxe2
- 2.Rxd4#
- 1...d3
- 2.Rd4#
- 2.Re5#
- 2.Qc4#
- 1...Sxd5!
- threat
- 1.Rd6?
- threat
- 2.Sc5#
- 1...Rxe6
- 2.Rxe6#
- 2.Qxe6#
- 1...Sa4
- 2.Bxd5#
- 1...d3
- 2.Qc4#
- 1...Rf2!
- threat
- 1.Qc6?
- threat
- 2.Sc5#
- 1...Rxe6
- 2.Qxe6#
- 1...Sa4
- 2.Qxd5#
- 1...d3
- 2.Qc4#
- 1...Rxh4!
- threat
- 1.b6?
- threat
- 2.Sc5#
- 1...Rxe6
- 2.Qxe6#
- 1...Sa4
- 2.Bxd5#
- 1...d3
- 2.Qc4#
- 1...Bd3+!
- threat
- 1.Bc6?
- Keys
- 1.Rd1!
- threat
- 2.Rxd4#
- 1...Rxe6+
- 2.Qxe6#
- 1...Rxh4
- 2.Sc5#
- 1...Sxd1
- 2.Bxd5#
- 1...Sxe2
- 2.Bxd5#
- 1...Sxb5
- 2.Bxd5#
- 1...Bd3
- 2.exd3#
- 1...d3
- 2.Qc4#
- threat
- 1.Rd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(h);N_PINS(H),XS(D)::S(H)
- R(h);N_PINS(H)::S(H)
- R(h);CHECK,OGATE,XS(H)::QAR2(K),XR(h)
- S(c);N_GUARD::B(I),XP(g)
- S(c);N_GUARD,XP(F)::B(I),XP(g)
- P(e);OGATEB::QAR2(K)
- Tries
- Try
- B(I);N_SPINS(H)
- Threat
- S(H)
- Vars
- R(h);OGATE,P_PINB(I),XS(H)::QAR2(K),XR(h)
- S(c);N_GUARD::B(I),XP(g)
- Refutation
- P(e);
- Try
- B(J);N_SPINS(H)
- Threat
- S(H)
- Vars
- R(h);OGATE,P_PINB(J),XS(H)::QAR2(K),XR(h)
- P(e);OGATEB::QAR2(K)
- Refutation
- S(c);
- Try
- R(L);XP(g)
- Threat
- DUALS(2)
- Vars
- R(h);CHECK,OGATE,XS(H)::QAR2(K),XR(h)
- R(b);XP(B)::B(I)+R(L),DCHECK,XP(e)
- S(c);XP(B)::B(I)+R(L),DCHECK,XP(e)
- Refutation
- S(c);P_SPINS(c),XR(L)
- Try
- R(L);N_SPINS(H)
- Threat
- S(H)
- Vars
- S(c);N_GUARD::B(I),XP(g)
- P(e);OGATEB::QAR2(K)
- Refutation
- R(b);
- Try
- Q(K);N_SPINS(H)
- Threat
- S(H)
- Vars
- R(h);OGATE,P_PINQ(K),XS(H)::QAR2(K),XR(h)
- S(c);N_GUARD::QAB1(K),XP(g)
- P(e);OGATEB::QAR2(K)
- Refutation
- R(h);XS(D)
- Try
- P(F);N_SPINS(H)
- Threat
- S(H)
- Vars
- R(h);OGATE,P_PINP(F),XS(H)::QAR2(K),XR(h)
- S(c);N_GUARD::B(I),XP(g)
- P(e);OGATEB::QAR2(K)
- Refutation
- B(a);CHECK
- Try
- Actual
- R(A);
- Threat
- R1(A),XP(e)
- Vars
- R(h);CHECK,OGATE,XS(H)::QAR2(K),XR(h)
- R(h);N_PINS(H),XS(D)::S(H)
- S(c);N_GUARD,XR(A)::B(I),XP(g)
- S(c);N_GUARD,XP(B)::B(I),XP(g)
- S(c);N_GUARD,XP(F)::B(I),XP(g)
- B(a);OGATE,P_PINP(F)::P(B),XB(a)
- P(e);OGATEB::QAR2(K)
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