MESON Chess Problem Database

Problem Display
PID: 23781 (4N2K/1b1R3Q/6p1/2p1pP1P/2p1kB2/3pP1pr/2N3P1/1B1R4 w - - 0 1)

Gebura, Stanislaw

Sakkelet, 1996

4N2K/1b1R3Q/6p1/2p1pP1P/2p1kB2/3pP1pr/2N3P1/1B1R4

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Qxg6#
    • 1...Bd5
      • 2.Sd6#
    • 1...dxc2
      • 2.Sd6#
      • 2.Bxc2#
    • 1...d2
      • 2.Sa1#
      • 2.Se1#
      • 2.Sa3#
      • 2.Sb4#
      • 2.Sd4#
    • 1...gxf5
      • 2.Sf6#
    • 1...gxh5
      • 2.Sf6#
      • 2.f6#
    • 1...g5
      • 2.Sf6#
      • 2.f6#
  • Tries
    • 1.Re7?
      • threat
        • 2.Rxe5#
      • 1...Kxf5
        • 2.Qxg6#
      • 1...d2
        • 2.Sb4#
      • 1...Kd5!
    • 1.Qxg6?
      • threat
        • 2.Sf6#
        • 2.f6#
      • 1...exf4
        • 2.Qe6#
      • 1...Rxh5+!
    • 1.Qg8?
      • threat
        • 2.Sd6#
      • 1...Kxf5
        • 2.Qxg6#
      • 1...exf4
        • 2.Qe6#
      • 1...d2
        • 2.Sa1#
        • 2.Se1#
        • 2.Sa3#
        • 2.Sb4#
        • 2.Sd4#
      • 1...Rxh5+!
    • 1.Qf7?
      • threat
        • 2.Sd6#
      • 1...exf4
        • 2.Re7#
        • 2.Qe6#
      • 1...d2
        • 2.Sa1#
        • 2.Se1#
        • 2.Sa3#
        • 2.Sb4#
        • 2.Sd4#
      • 1...Rxh5+!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Rxe5#
      • 1...Kxd5
        • 2.Qxb7#
      • 1...Kxf5
        • 2.Qxg6#
      • 1...Bxd5
        • 2.Sd6#
      • 1...exf4
        • 2.Sf6#
      • 1...d2
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(e);OGATEB,P_SPINP(h),S_FLIGHT,XP(G)::QAB1(J),XP(h)
    • B(i);SBLOCK::S(K)
    • P(h);P_SPINP(h),XP(G)::S(K)
  • Tries
    • Try
      • R(I);P_PINP(g)
      • Threat
        • R1(I),XP(g)
      • Vars
        • K(e);N_SPINP(g),OGATEB,P_SPINP(h),S_FLIGHT,XP(G)::QAB1(J),XP(h)
        • P(a);::B(A)+S(C)
      • Refutation
        • K(e);N_SPINP(g),P_SPINP(a),S_FLIGHT
    • Try
      • Q(J);P_SPINP(H),XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • P(g);OGATEB,XB(F)::QAR2(J)
      • Refutation
        • R(c);CHECK,XP(H)
    • Try
      • Q(J);P_SPINP(H)
      • Threat
        • S(K)
      • Vars
        • K(e);OGATEB,S_FLIGHT,XP(G)::QAB1(J),XP(h)
        • P(g);OGATEB,XB(F)::QAR2(J)
      • Refutation
        • R(c);CHECK,XP(H)
    • Try
      • Q(J);P_SPINP(H)
      • Threat
        • S(K)
      • Refutation
        • R(c);CHECK,XP(H)
  • Actual
    • R(I);
    • Threat
      • R1(I),XP(g)
    • Vars
      • K(e);OGATEB,P_SPINP(a),S_FLIGHT,XR(I)::QAB(J),XB(i)
      • K(e);OGATEB,P_SPINP(g),S_FLIGHT,XP(G)::QAB1(J),XP(h)
      • B(i);SBLOCK,XR(I)::S(K)
      • P(g);XB(F)::S(K)
      • P(a);::B(A)+S(C)
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