MESON Chess Problem Database
Problem Display
PID: 287290 (8/1p1K1p2/1P3P2/R1Bk4/2pNN3/2q1nB2/1Q1r4/3nR3 w - - 0 1)
Bylevski, L
Mat, 1987
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Qb4
- 2.Bxb4#
- 1...Qxd4
- 2.Bxd4#
- 1...Qc1
- 2.Ba3#
- 2.Bb4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...Qc2
- 2.Ba3#
- 2.Bb4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...Qa3
- 2.Bxa3#
- 1...Qb3
- 2.Bb4#
- 1...Qd3
- 2.Ba3#
- 2.Bb4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...Rxd4
- 2.Bb4#
- 1...Sf1
- 2.Sxc3#
- 1...Sc2
- 2.Sxc3#
- 1...Sg2
- 2.Sxc3#
- 1...Sg4
- 2.Sxc3#
- 1...Sf5
- 2.Sxc3#
- 1...Qb4
- Tries
- 1.Se2?
- threat
- 2.Bb4#
- 1...Ke5+
- 2.Bd4#
- 2.Bd6#
- 1...Qxa5
- 2.Sf4#
- 1...Qb4
- 2.Sf4#
- 2.Sxd2#
- 2.Sf2#
- 2.S4g3#
- 2.Sg5#
- 2.Sd6#
- 2.Bxb4#
- 1...Qd4
- 2.Bxd4#
- 1...Qa3
- 2.Sf4#
- 2.Sxd2#
- 2.Sf2#
- 2.S4g3#
- 2.Sg5#
- 2.Sd6#
- 2.Bxa3#
- 1...Rxe2!
- threat
- 1.Sb3?
- threat
- 2.Bb4#
- 1...Ke5+
- 2.Bd6#
- 1...Qxa5
- 2.Sexd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 1...Qb4
- 2.Sexd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Bxb4#
- 1...Qd4
- 2.Bxd4#
- 1...cxb3!
- threat
- 1.Sc6?
- threat
- 2.Sxd2#
- 2.Sf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Bb4#
- 1...Qxb2
- 2.Sxd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Bb4#
- 1...Qxa5
- 2.Se7#
- 2.Qe5#
- 1...Qxf6
- 2.Sc3#
- 2.Sxf6#
- 2.Sb4#
- 2.Ba3#
- 2.Bxe3#
- 2.Bb4#
- 2.Bd4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...Rxb2
- 2.Sd2#
- 2.Sf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Bb4#
- 1...Qb4
- 2.Sxd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sxb4#
- 2.Se7#
- 2.Bxb4#
- 2.Qe5#
- 1...Qd4
- 2.Sc3#
- 2.Bxd4#
- 1...Qe5
- 2.Sc3#
- 2.Sb4#
- 2.Ba3#
- 2.Bxe3#
- 2.Bb4#
- 2.Bd4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Qxe5#
- 1...Qc1
- 2.Sxd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sb4#
- 2.Se7#
- 2.Ba3#
- 2.Bxe3#
- 2.Bb4#
- 2.Bd4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Qe5#
- 1...Qc2
- 2.Sc3#
- 2.Sb4#
- 2.Se7#
- 2.Ba3#
- 2.Bxe3#
- 2.Bb4#
- 2.Bd4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Qe5#
- 1...Qa3
- 2.Sxd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Se7#
- 2.Bxa3#
- 2.Qe5#
- 1...Qb3
- 2.Sxd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Se7#
- 2.Bb4#
- 2.Qe5#
- 1...Qd3
- 2.Sc3#
- 2.Sb4#
- 2.Se7#
- 2.Ba3#
- 2.Bxe3#
- 2.Bb4#
- 2.Bd4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Qe5#
- 1...Rc2
- 2.Sd2#
- 2.Sf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Bb4#
- 1...Re2
- 2.Sd2#
- 2.Sf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Bb4#
- 1...Rf2
- 2.Sxf2#
- 2.Sxc3#
- 2.Bb4#
- 1...Rg2
- 2.Sd2#
- 2.Sf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Bb4#
- 1...Rh2
- 2.Sd2#
- 2.Sf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Bb4#
- 1...Rd3
- 2.Sd2#
- 2.Sf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Bb4#
- 1...Rd4
- 2.Sxc3#
- 2.Bb4#
- 1...Sf2
- 2.Sxf2#
- 2.Sxc3#
- 2.Bb4#
- 1...Sf1
- 2.Sxc3#
- 2.Bb4#
- 1...Sc2
- 2.Sxc3#
- 2.Bb4#
- 1...Sg2
- 2.Sxc3#
- 2.Bb4#
- 1...Sg4
- 2.Sxc3#
- 2.Bb4#
- 1...Sf5
- 2.Sxc3#
- 2.Bb4#
- 1...bxc6!
- threat
- 1.Se6?
- threat
- 2.Bb4#
- 1...Ke5+
- 2.Bd4#
- 2.Bd6#
- 1...Qxa5
- 2.Sxd2#
- 2.Sf2#
- 2.Sg3#
- 2.S4g5#
- 2.Sd6#
- 2.Sf4#
- 2.Sc7#
- 1...Qb4
- 2.Sxd2#
- 2.Sf2#
- 2.Sg3#
- 2.S4g5#
- 2.Sd6#
- 2.Sf4#
- 2.Sc7#
- 2.Bxb4#
- 1...Qd4
- 2.Bxd4#
- 1...Qa3
- 2.Sxd2#
- 2.Sf2#
- 2.Sg3#
- 2.S4g5#
- 2.Sd6#
- 2.Sf4#
- 2.Sc7#
- 2.Bxa3#
- 1...fxe6!
- threat
- 1.Bd6+?
- 1...Qxa5
- 2.Sxd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 1...Kxd4!
- 1...Qxa5
- 1.Qxc3?
- threat
- 2.Ba3#
- 2.Bb4#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...Ke5
- 2.Bd6#
- 1...Ra2
- 2.Ba3#
- 1...Rb2
- 2.Bb4#
- 1...Sxc3!
- threat
- 1.Se2?
- Keys
- 1.Sf5!
- threat
- 2.Bb4#
- 1...Ke5+
- 2.Bd6#
- 1...Qxa5
- 2.Se7#
- 1...Sxf5
- 2.Sxc3#
- 1...Qb4
- 2.Sxd2#
- 2.Sf2#
- 2.Seg3#
- 2.Sg5#
- 2.Sed6#
- 2.Se7#
- 2.Bxb4#
- 1...Qd4
- 2.Bxd4#
- 1...Qa3
- 2.Sxd2#
- 2.Sf2#
- 2.Seg3#
- 2.Sg5#
- 2.Sed6#
- 2.Se7#
- 2.Bxa3#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(c);::R(F)+B(G),XQ(c)
- Q(c);OGATE,XS(D)::R(F)+B(G),XQ(c)
- Q(c);N_GUARD::R(F)+B(G),XQ(c)
- Q(c);::R(F)+B(G)
- R(b);SBLOCK,XS(D)::R(F)+B(G)
- S(d);::B(C)+S(E),DCHECK,XQ(c)
- Tries
- Try
- S(D);
- Threat
- R(F)+B(G)
- Vars
- Q(c);XR(F)::S(D)
- Q(c);N_GUARD::R(F)+B(G),XQ(c)
- Refutation
- R(b);XS(D)
- Try
- S(D);
- Threat
- R(F)+B(G)
- Vars
- K(f);CHECK,P-FLIGHT,P_SPINQ(c)::R(F)+B(G),DCHECK
- Q(c);N_GUARD::R(F)+B(G),XQ(c)
- Refutation
- P(e);XS(D)
- Try
- S(D);
- Threat
- DUALS(7)
- Refutation
- P(g);XS(D)
- Try
- S(D);
- Threat
- R(F)+B(G)
- Vars
- Q(c);N_GUARD::R(F)+B(G),XQ(c)
- Refutation
- P(h);XS(D)
- Try
- B(G);CHECK
- Refutation
- K(f);P-FLIGHT,P_SPINQ(c),XS(D)
- Try
- Q(B);XQ(c)
- Threat
- DUALS(5)
- Vars
- K(f);P-FLIGHT,P_PINS(D)::R(F)+B(G),DCHECK
- R(b);::R(F)+B(G)
- Refutation
- S(a);XQ(B)
- Try
- Actual
- S(D);
- Threat
- R(F)+B(G)
- Vars
- K(f);CHECK,P-FLIGHT,P_SPINQ(c)::R(F)+B(G),DCHECK
- Q(c);XR(F)::S(D)
- S(d);XS(D)::B(C)+S(E),DCHECK,XQ(c)
- Q(c);N_GUARD::R(F)+B(G),XQ(c)
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