MESON Chess Problem Database
Problem Display
PID: 142532 (1n3N2/8/2pN1p2/1pBpkP1n/4P3/1R4r1/b2Q2Pp/b4R1K w - - 0 1)
Witt, Andreas
Die Schwalbe, 2011
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Rxb3
- 2.Sg6#
- 1...Rc3
- 2.Sg6#
- 2.Qd4#
- 1...Rd3
- 2.Sg6#
- 1...Re3
- 2.Sg6#
- 1...Rf3
- 2.Sg6#
- 1...Rh3
- 2.Sg6#
- 1...Rg6
- 2.Sxg6#
- 1...Bd4
- 2.Qxd4#
- 1...Sf4
- 2.Qxf4#
- 1...Sg7
- 2.Qf4#
- 1...Sa6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...dxe4
- 2.Sf7#
- 1...Rxb3
- Tries
- 1.Rb2?
- threat
- 2.Qd4#
- 1...Rd3
- 2.Sg6#
- 1...Rf3
- 2.Sg6#
- 1...d4
- 2.Qxd4#
- 1...Bxb2!
- threat
- 1.Rc3?
- threat
- 2.Qd4#
- 1...Rd3
- 2.Sg6#
- 1...Rf3
- 2.Sg6#
- 1...d4
- 2.Qxd4#
- 1...Bxc3!
- threat
- 1.Re3?
- threat
- 2.Sf7#
- 1...Rxe3
- 2.Sg6#
- 1...dxe4
- 2.Rxe4#
- 1...Rf3
- 2.Sg6#
- 1...Rg7
- 2.exd5#
- 1...d4!
- threat
- 1.Rxg3?
- threat
- 2.Sg6#
- 1...Sf4
- 2.Qxf4#
- 1...Sxg3+!
- threat
- 1.Qe1?
- threat
- 2.Sf7#
- 1...dxe4
- 2.Qxe4#
- 1...Rf3
- 2.Sg6#
- 1...Re3
- 2.Sg6#
- 1...Rg7!
- threat
- 1.Qe3?
- threat
- 2.Sf7#
- 1...Rxe3
- 2.Sg6#
- 1...dxe4
- 2.Qxe4#
- 1...Rg7!
- threat
- 1.Qc2?
- threat
- 2.Sf7#
- 1...dxe4
- 2.Qxe4#
- 1...Rf3
- 2.Sg6#
- 1...Rd3
- 2.Sg6#
- 1...Rg7!
- threat
- 1.Qe2?
- threat
- 2.Sf7#
- 1...dxe4
- 2.Qxe4#
- 1...Rf3
- 2.Sg6#
- 1...Re3
- 2.Sg6#
- 1...Rg7!
- threat
- 1.Qd3?
- threat
- 2.Sf7#
- 1...Rxd3
- 2.Sg6#
- 1...Rf3
- 2.Sg6#
- 1...Rg7!
- threat
- 1.Rb2?
- Keys
- 1.Re1!
- threat
- 2.Sf7#
- 1...dxe4
- 2.Rxe4#
- 1...Re3
- 2.Sg6#
- 1...Rg7
- 2.exd5#
- threat
- 1.Re1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- R(d);N_GUARD,XR(E)::S(J)
- R(d);N_GUARD::S(J)
- R(d);N_GUARD::S(J),XR(d)
- B(a);N_GUARD::QAB1(C),XB(a)
- S(h);N_GUARD::QAB1(C),XS(h)
- S(h);N_GUARD::QAB1(C)
- S(k);N_GUARD::S(J)
- S(k);N_GUARD::S(J),XS(k)
- P(f);SBLOCK,XP(F)::S(I)
- Tries
- Try
- R(E);
- Threat
- QAB1(C)
- Vars
- R(d);N_GUARD::S(J)
- P(f);::QAB1(C),XP(f)
- Refutation
- B(a);XR(E)
- Try
- R(E);
- Threat
- QAB1(C)
- Vars
- R(d);N_GUARD::S(J)
- P(f);::QAB1(C),XP(f)
- Refutation
- B(a);XR(E)
- Try
- R(E);
- Threat
- S(I)
- Vars
- R(d);N_GUARD,XR(E)::S(J)
- P(f);OGATE,P_SPINP(f),XP(F)::R1(E),XP(f)
- R(d);N_GUARD::S(J)
- R(d);N_GUARD::R(E)+P(F),XP(f)
- Refutation
- P(f);
- Try
- R(E);XR(d)
- Threat
- S(J)
- Vars
- S(h);N_GUARD::QAB1(C),XS(h)
- Refutation
- S(h);CHECK,XR(E)
- Try
- Q(C);
- Threat
- S(I)
- Vars
- P(f);OGATE,P_SPINP(f),XP(F)::QAR1(C),XP(f)
- R(d);N_GUARD::S(J)
- Refutation
- R(d);
- Try
- Q(C);
- Threat
- S(I)
- Vars
- R(d);N_GUARD,XQ(C)::S(J)
- P(f);OGATE,P_SPINP(f),XP(F)::QAR1(C),XP(f)
- Refutation
- R(d);
- Try
- Q(C);
- Threat
- S(I)
- Vars
- P(f);OGATE,XP(F)::QAR1(C),XP(f)
- R(d);N_GUARD::S(J)
- Refutation
- R(d);
- Try
- Q(C);
- Threat
- S(I)
- Vars
- P(f);OGATE,P_SPINP(f),XP(F)::QAR1(C),XP(f)
- R(d);N_GUARD::S(J)
- Refutation
- R(d);
- Try
- Q(C);
- Threat
- S(I)
- Vars
- R(d);N_GUARD,XQ(C)::S(J)
- R(d);N_GUARD::S(J)
- Refutation
- R(d);
- Try
- Actual
- R(A);
- Threat
- S(I)
- Vars
- P(f);OGATE,P_SPINP(f),XP(F)::R1(A),XP(f)
- R(d);N_GUARD::S(J)
- R(d);N_GUARD::R(A)+P(F),XP(f)
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