MESON Chess Problem Database
Problem Display
PID: 199709 (B7/B1R5/1r1R1p1n/r2PN2Q/N3k2n/1bP3PK/2PP4/8 w - - 0 1)
Aloni, Yoel
Navon, Emanuel
Variantim, 1997
#2
13 + 7
SOLUTION
- SOUND
- Sets
- 1...Rc5
- 2.Sxc5#
- 1...Rxd5
- 2.Sc5#
- 1...Raa6
- 2.Sc5#
- 1...Rxa7
- 2.Sc5#
- 1...Rb4
- 2.d3#
- 1...Rb5
- 2.d3#
- 1...Rba6
- 2.d3#
- 1...Rc6
- 2.d3#
- 1...Rxd6
- 2.d3#
- 1...Rb7
- 2.d3#
- 1...Rb8
- 2.d3#
- 1...Bxc2
- 2.Rc4#
- 1...Bxa4
- 2.Rc4#
- 1...Bc4
- 2.Rxc4#
- 1...Bxd5
- 2.Rc4#
- 1...f5
- 2.Qe2#
- 1...Rc5
- Tries
- 1.Sd3?
- threat
- 2.Sf2#
- 2.Re7#
- 1...Rxa7
- 2.Sf2#
- 2.Sdc5#
- 2.Sac5#
- 1...Rxd6
- 2.Sf2#
- 1...Bxc2
- 2.Sf2#
- 1...Sg4
- 2.Qxg4#
- 1...Rb7
- 2.Sf2#
- 2.Re6#
- 1...Sf3
- 2.Sf2#
- 1...Sg6
- 2.Sf2#
- 1...S6f5
- 2.Qg4#
- 1...Sf7
- 2.Sf2#
- 2.Qg4#
- 1...Sg8
- 2.Sf2#
- 2.Qg4#
- 1...f5
- 2.Re7#
- 2.Qe2#
- 1...S4f5!
- threat
- 1.Sc4?
- threat
- 2.Re7#
- 2.d3#
- 1...Rxa7
- 2.Sc5#
- 2.d3#
- 1...Rxd6
- 2.Sxd6#
- 2.d3#
- 1...Bxc4
- 2.Rxc4#
- 2.Re7#
- 1...Sg4
- 2.Qxg4#
- 1...Rb7
- 2.Re6#
- 2.d3#
- 1...Sf3
- 2.d3#
- 1...S4f5
- 2.d3#
- 1...Sg6
- 2.d3#
- 1...S6f5
- 2.Qg4#
- 2.d3#
- 1...Sf7
- 2.Qg4#
- 2.d3#
- 1...Sg8
- 2.Qg4#
- 2.d3#
- 1...Bxc2!
- threat
- 1.Re7?
- threat
- 2.Sd3#
- 2.Sf3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rxd5
- 2.Sc5#
- 2.Sd3#
- 2.Sf3#
- 2.Sc4#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rxa7
- 2.Sc5#
- 2.Sd7#
- 1...Rxd6
- 2.d3#
- 1...Bxd5
- 2.Sd3#
- 2.Sf3#
- 2.Sc4#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...fxe5
- 2.Rxe5#
- 1...S4f5
- 2.Qf3#
- 1...Rc6
- 2.Sd3#
- 2.Sf3#
- 2.Sc4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.d3#
- 1...Rb7
- 2.Sd7#
- 2.d3#
- 1...Bc4
- 2.Sd3#
- 2.Sf3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Sf3
- 2.Sxf3#
- 2.Qxf3#
- 1...Sg6
- 2.Sxg6#
- 2.Qf3#
- 1...Sg4
- 2.Qxg4#
- 1...S6f5
- 2.Qg4#
- 1...Sf7
- 2.Sxf7#
- 2.Qg4#
- 1...Sg8
- 2.Qg4#
- 1...Bxc2!
- threat
- 1.Qf3+?
- 1...Kxe5
- 2.Qf4#
- 1...Sxf3!
- 1...Kxe5
- 1.Qg4+?
- 1...Kxe5
- 2.Qe6#
- 2.Qf4#
- 1...Sxg4!
- 1...Kxe5
- 1.Qxh4+?
- 1...Kxe5
- 2.Qf4#
- 1...Kf5
- 2.Qf4#
- 1...Sg4!
- 1...Kxe5
- 1.Sd3?
- Keys
- 1.Re6!
- threat
- 2.Sc6#
- 1...Rxd5
- 2.Sc5#
- 1...Rxe6
- 2.d3#
- 1...Bxc2
- 2.Rc4#
- 1...Bxd5
- 2.Rc4#
- 1...fxe5
- 2.Rxe5#
- 1...Rc6
- 2.Sxc6#
- 1...S4f5
- 2.Qf3#
- 1...Rd6
- 2.d3#
- 1...Sf3
- 2.Qxf3#
- 1...Sg6
- 2.Qf3#
- 1...Sg4
- 2.Qxg4#
- 1...S6f5
- 2.Qg4#
- 1...Sf7
- 2.Qg4#
- 1...f5
- 2.Qe2#
- threat
- 1.Re6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 8
- REMOVED MATES = 10
- Sets
- R(d);N_GUARD::S(F),XR(d)
- R(d);N_GUARD,P_SPINR(d),XP(G)::S(F)
- R(d);N_GUARD::S(F)
- R(d);N_GUARD,XB(K)::S(F)
- R(e);::P(B)
- R(e);XR(J)::P(B)
- B(a);N_GUARD,XP(A)::R(L)
- B(a);N_GUARD,XS(F)::R(L)
- B(a);N_GUARD::R(L),XB(a)
- B(a);N_GUARD,P_SPINB(a),XP(G)::R(L)
- P(f);SBLOCK::QAR2(I)
- Tries
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- R(e);XR(J)::S(H)
- B(a);XP(A)::S(H)
- S(g);N_GUARD::QAR2(I),XS(g)
- S(c);::S(H)
- S(g);N_GUARD::QAR2(I)
- Refutation
- S(c);
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(g);N_GUARD::QAR2(I),XS(g)
- S(c);::P(B)
- Refutation
- B(a);XP(A)
- Try
- R(L);
- Threat
- DUALS(7)
- Vars
- R(e);XR(J)::P(B)
- P(f);OGATE,P_SPINP(f),XS(H)::R1(L),XP(f)
- S(c);N_GUARD::QAB1(I)
- S(g);N_GUARD::QAR2(I),XS(g)
- S(g);N_GUARD::QAR2(I)
- Refutation
- B(a);XP(A)
- Try
- Q(I);CHECK
- Vars
- K(b);P-FLIGHT,XS(H)::QAB1(I)
- Refutation
- S(c);XQ(I)
- Try
- Q(I);CHECK
- Refutation
- S(g);XQ(I)
- Try
- Q(I);CHECK,XS(c)
- Vars
- K(b);P-FLIGHT,XS(H)::QAB1(I)
- K(b);S_FLIGHT::QAR1(I)
- Refutation
- S(g);P_SPINS(g)
- Try
- Actual
- R(J);
- Threat
- R(J)+S(H)
- Vars
- R(d);N_GUARD,P_SPINR(d),XP(G)::S(F)
- R(e);XR(J)::P(B)
- B(a);N_GUARD,XP(A)::R(L)
- B(a);N_GUARD,P_SPINB(a),XP(G)::R(L)
- P(f);OGATE,P_SPINP(f),XS(H)::R1(J),XP(f)
- R(e);::R(J)+S(H),XR(e)
- S(c);N_GUARD::QAB1(I)
- R(e);::P(B)
- S(c);N_GUARD::QAB1(I),XS(c)
- S(g);N_GUARD::QAR2(I),XS(g)
- S(g);N_GUARD::QAR2(I)
- P(f);SBLOCK::QAR2(I)
Developed and maintained by Brian Stephenson.
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