MESON Chess Problem Database

Problem Display
PID: 136837 (5B1Q/3r2np/3pNNkP/3P3p/3P3p/5BnK/8/5RR1 w - - 0 1)

Gvozdjak, Peter

Mat Plus, 1996

5B1Q/3r2np/3pNNkP/3P3p/3P3p/5BnK/8/5RR1

#2

11 + 8

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Be4#
    • 1...Kxh6
      • 2.Qxh7#
    • 1...Kf7
      • 2.Qxg7#
    • 1...Sf5
      • 2.Bxh5#
    • 1...Se8
      • 2.Bxh5#
  • Tries
    • 1.Be4+?
      • 1...Kxh6
        • 2.Sg8#
        • 2.Qxh7#
      • 1...Kf7
        • 2.Sg5#
        • 2.Qxg7#
        • 2.Qg8#
      • 1...Sf5!
    • 1.Bxh5+?
      • 1...Kxh6
        • 2.Qxh7#
      • 1...Sxh5!
    • 1.Bxg7?
      • threat
        • 2.Bxh5#
      • 1...Kf5
        • 2.Be4#
        • 2.Qxh7#
      • 1...Kf7
        • 2.Qe8#
      • 1...Rxg7!
    • 1.Rxg3+?
      • 1...Kf5
        • 2.Bd1#
        • 2.Bh1#
        • 2.Be2#
        • 2.Bg2#
        • 2.Be4#
        • 2.Bxh5#
      • 1...Kxf6
        • 2.Bd1#
        • 2.Bh1#
        • 2.Be2#
        • 2.Bg2#
        • 2.Be4#
        • 2.Bxh5#
      • 1...Kxh6
        • 2.Sg8#
        • 2.Qxh7#
      • 1...Kf7
        • 2.Qxg7#
      • 1...hxg3!
    • 1.Qxg7+?
      • 1...Kf5
        • 2.Be4#
        • 2.Bg4#
        • 2.Qg5#
      • 1...Rxg7!
    • 1.Qxh7+?
      • 1...Kf7
        • 2.Qxg7#
      • 1...Kxf6!
  • Keys
    • 1.Sxd7!
      • 1...Kf5
        • 2.Qxh7#
      • 1...Kxh6
        • 2.Qxg7#
      • 1...Kf7
        • 2.Bxh5#
      • 1...Sxe6
        • 2.Qf6#
      • 1...Sf5
        • 2.Qf6#
      • 1...Se8
        • 2.Be4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINS(a),S_FLIGHT::R(A)+B(C),DCHECK
    • K(e);N_SPINS(a),P-FLIGHT,P_SPINP(h),P_SPINS(g),XP(I)::QAR1(K),XP(h)
    • K(e);N_SPINS(a),S_FLIGHT::QAR1(K),XS(g)
    • S(g);N_GUARD::B(C),XP(c)
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • S(g);
    • Try
      • B(C);CHECK,XP(c)
      • Vars
        • K(e);N_SPINS(a),P-FLIGHT,P_SPINP(h),P_SPINS(g),XP(I)::QAR1(K),XP(h)
      • Refutation
        • S(g);XB(C)
    • Try
      • B(J);XS(g)
      • Threat
        • B(C),XP(c)
      • Vars
        • K(e);N_SPINS(a),S_FLIGHT::QAB1(K)
      • Refutation
        • R(f);XB(J)
    • Try
      • R(B);CHECK,XS(a)
      • Vars
        • K(e);S_FLIGHT::QAR1(K),XS(g)
      • Refutation
        • P(b);XR(B)
    • Try
      • Q(K);CHECK,XS(g)
      • Refutation
        • R(f);XQ(K)
    • Try
      • Q(K);CHECK,XP(h)
      • Vars
        • K(e);N_SPINS(a),P_SPINS(g),S_FLIGHT::QAR1(K),XS(g)
      • Refutation
        • K(e);N_SPINS(a),P-FLIGHT,XS(H)
  • Actual
    • S(H);XR(f)
    • Vars
      • K(e);N_SPINS(a),S_FLIGHT::QAB(K),XP(h)
      • K(e);N_SPINS(a),P-FLIGHT,P_SPINP(h),P_SPINS(g),XP(I)::QAB1(K),XS(g)
      • K(e);N_SPINS(a),S_FLIGHT::R(A)+B(C),DCHECK,XP(c)
      • S(g);OGATE,XS(G)::QAR1(K)
      • S(g);OGATE::QAR1(K)
      • S(g);N_GUARD::B(C)
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