MESON Chess Problem Database
Problem Display
PID: 68184 (2K1RQN1/2n2BRb/7B/3P1k1P/6N1/3n4/p2b1pq1/8 w - - 0 1)
Zidek, Alexander
3rd Place, 04. WCCT, 1989-1992
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Be6#
- 1...Qxd5
- 2.Bxd5#
- 1...Qxg4
- 2.Bg6#
- 1...Be1
- 2.Se3#
- 1...Bc3
- 2.Se3#
- 1...Be3
- 2.Sxe3#
- 1...Bb4
- 2.Se3#
- 1...Ba5
- 2.Se3#
- 1...Bxg8
- 2.Bxg8#
- 1...Sc1
- 2.Re5#
- 1...Se1
- 2.Re5#
- 1...Sb2
- 2.Re5#
- 1...Sb4
- 2.Re5#
- 1...Sf4
- 2.Rg5#
- 2.Re5#
- 1...Sc5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sxd5
- 2.Bxd5#
- 1...Qe4
- Tries
- 1.Re2?
- threat
- 2.Se7#
- 2.Be6#
- 2.Be8#
- 1...Qxd5
- 2.Se7#
- 2.Bxd5#
- 2.Be6#
- 1...Qxg4
- 2.Be6#
- 2.Bg6#
- 2.Be8#
- 1...Bxh6
- 2.Be6#
- 2.Be8#
- 1...Bxg8
- 2.Be6#
- 2.Bxg8#
- 1...Sxd5
- 2.Bxd5#
- 2.Be6#
- 1...Bg5
- 2.Be6#
- 1...Bg6
- 2.Be6#
- 1...a1Q
- 2.Se7#
- 2.Be6#
- 1...a1B
- 2.Se7#
- 2.Be6#
- 1...Qe4
- 2.Be6#
- 2.Be8#
- 1...Bc3
- 2.Se7#
- 2.Be6#
- 1...Bb4
- 2.Be6#
- 1...Se5
- 2.Se7#
- 2.Be6#
- 2.Rxe5#
- 1...Se6
- 2.Se7#
- 2.Bxe6#
- 1...Se8
- 2.Se7#
- 2.Be6#
- 2.Bxe8#
- 1...Be3!
- threat
- 1.Re3?
- threat
- 2.Se7#
- 2.Be6#
- 2.Be8#
- 1...Qxd5
- 2.Se7#
- 2.Bxd5#
- 2.Be6#
- 1...Qxg4
- 2.Be6#
- 2.Bg6#
- 2.Be8#
- 1...Bxg8
- 2.Be6#
- 2.Bxg8#
- 1...Sxd5
- 2.Bxd5#
- 2.Be6#
- 1...Bg6
- 2.Be6#
- 1...a1Q
- 2.Se7#
- 2.Be6#
- 1...a1B
- 2.Se7#
- 2.Be6#
- 1...Qe4
- 2.Be6#
- 2.Be8#
- 1...Bc3
- 2.Se7#
- 2.Be6#
- 1...Bb4
- 2.Be6#
- 1...Se5
- 2.Se7#
- 2.Be6#
- 2.Rxe5#
- 1...Se6
- 2.Se7#
- 2.Bxe6#
- 1...Se8
- 2.Se7#
- 2.Be6#
- 2.Bxe8#
- 1...Bxe3!
- threat
- 1.Re2?
- Keys
- 1.Qb4!
- threat
- 2.Se7#
- 1...Qxg4
- 2.Qxg4#
- 1...Bxb4
- 2.Se3#
- 1...Bxg8
- 2.Bg6#
- 1...Sxb4
- 2.Re5#
- 1...Sxd5
- 2.Be6#
- 1...Qe4
- 2.Qxe4#
- 1...Bg5
- 2.Rxg5#
- threat
- 1.Qb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- Q(d);SBLOCK::QAR(I)+B(E),DCHECK
- Q(d);OGATE,XP(B)::QAR(I)+B(E),XQ(d)
- Q(d);SBLOCK,XS(A)::QAR(I)+B(E),DCHECK
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(h);OGATE,XS(J)::QAR(I)+B(E),XB(h)
- S(e);N_GUARD::R1(H)
- S(e);N_GUARD::R1(H),XS(e)
- S(g);OGATE,XP(B)::QAR(I)+B(E),XS(g)
- Tries
- Try
- R(H);
- Threat
- DUALS(3)
- Vars
- B(b);::QAR(I)+B(E),DCHECK
- B(h);::QAR(I)+B(E),DCHECK
- Refutation
- B(b);
- Try
- R(H);
- Threat
- DUALS(3)
- Vars
- B(h);::QAR(I)+B(E),DCHECK
- B(b);::QAR(I)+B(E),DCHECK
- Refutation
- B(b);XR(H)
- Try
- Actual
- Q(I);
- Threat
- S(J)
- Vars
- Q(d);OGATE,XS(A)::QAB1(I),XQ(d)
- B(b);N_GUARD,XQ(I)::S(A)
- B(h);N_GUARD,XS(J)::B(E)
- S(e);N_GUARD,XQ(I)::R1(H)
- S(g);N_GUARD,XP(B)::B(E)
- Q(d);N_GUARD::QAB1(I),XQ(d)
- B(b);N_GUARD::R1(F),XB(b)
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