MESON Chess Problem Database

Problem Display
PID: 156355 (6bK/2nN1p1P/2QpkP1R/r1bnN1p1/3p2P1/1r1PPP2/B7/4R3 w - - 0 1)

Stojnic, Dragan

The Problemist, 2014

6bK/2nN1p1P/2QpkP1R/r1bnN1p1/3p2P1/1r1PPP2/B7/4R3

#2

13 + 11

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sf8#
      • 1...Sxf6
        • 2.exd4#
      • 1...Ra8
        • 2.Sxc5#
      • 1...Rb8!
    • 1.Sg6?
      • threat
        • 2.Sgf8#
      • 1...Sxf6
        • 2.Sdf8#
      • 1...fxg6
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Rb8
        • 2.exd4#
      • 1...Ra8!
    • 1.Qxd5+?
      • 1...Kxd5
        • 2.Bxb3#
      • 1...Sxd5!
  • Keys
    • 1.exd4!
      • threat
        • 2.Sf8#
      • 1...Sxf6
        • 2.Sc4#
      • 1...Rb8
        • 2.Sg6#
      • 1...Ra8
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • S(K)
      • Vars
        • S(e);N_GUARD,P_SPINS(e),XP(I)::R(A)+P(D),XP(b)
        • R(c);N_GUARD::S(K),XB(d)
      • Refutation
        • R(a);
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • S(e);P_SPINR(a),SBLOCK,XP(I)::S(K)
        • P(j);XS(G)::PXB(k)=Q
        • R(a);P_SPINS(e)::R(A)+P(D),XP(b)
      • Refutation
        • R(c);
    • Try
      • Q(H);CHECK,N_PINP(g),XS(e)
      • Vars
        • K(h);P_SPINR(a),S_FLIGHT,XQ(H)::B(B),XR(a)
      • Refutation
        • S(i);XQ(H)
  • Actual
    • P(D);XP(b)
    • Threat
      • S(K)
    • Vars
      • S(e);N_GUARD,P_SPINR(a),P_SPINS(e),XP(I)::R(A)+S(G)
      • R(a);P_SPINS(e)::R(A)+S(G)
      • R(c);N_GUARD::S(K),XB(d)
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