MESON Chess Problem Database

Problem Display
PID: 204948 (6QB/4p3/2pPr1pp/1p1k2bR/p2PNR2/1rP1KP2/BN6/8 w - - 0 1)

Onkoud, Abdelaziz

Phenix, 1994

6QB/4p3/2pPr1pp/1p1k2bR/p2PNR2/1rP1KP2/BN6/8

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...a3
      • 2.Bxb3#
    • 1...c5
      • 2.Qa8#
  • Tries
    • 1.Kd2?
      • 1...exd6
        • 2.Sf6#
      • 1...c5
        • 2.Qa8#
      • 1...a3
        • 2.Bxb3#
      • 1...b4
        • 2.c4#
      • 1...gxh5!
    • 1.Ke2?
      • 1...gxh5
        • 2.Rf5#
      • 1...c5
        • 2.Qa8#
      • 1...a3
        • 2.Bxb3#
      • 1...b4
        • 2.c4#
      • 1...exd6!
    • 1.Kd3?
      • 1...gxh5
        • 2.Rf5#
      • 1...exd6
        • 2.Sf6#
      • 1...c5
        • 2.Qa8#
      • 1...a3
        • 2.Bxb3#
      • 1...b4!
    • 1.d7?
      • threat
        • 2.d8Q#
        • 2.d8R#
      • 1...gxh5
        • 2.d8Q#
        • 2.d8R#
      • 1...a3
        • 2.Bxb3#
        • 2.d8Q#
        • 2.d8R#
      • 1...b4
        • 2.d8Q#
        • 2.d8R#
      • 1...c5!
  • Keys
    • 1.Kf2!
      • 1...gxh5
        • 2.Rf5#
      • 1...exd6
        • 2.Sf6#
      • 1...c5
        • 2.Qa8#
      • 1...a3
        • 2.Bxb3#
      • 1...b4
        • 2.c4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::B(A),XR(a)
    • P(f);OGATEB::QAB(K)
  • Tries
    • Try
      • K(D);N_SPINP(C),N_SPINS(G),S_FLIGHT
      • Vars
        • P(j);N_GUARD,SBLOCK,XP(J)::S(G)
        • P(f);OGATEB::QAB(K)
        • P(b);N_GUARD::B(A),XR(a)
        • P(c);N_GUARD::P(C)
      • Refutation
        • P(h);N_SPINB(e),XR(I)
    • Try
      • K(D);N_SPINP(C),N_SPINR(H),P-FLIGHT
      • Vars
        • P(h);N_GUARD,N_SPINB(e),XR(I)::R(H)
        • P(f);OGATEB::QAB(K)
        • P(b);N_GUARD::B(A),XR(a)
        • P(c);N_GUARD::P(C)
      • Refutation
        • P(j);XP(J)
    • Try
      • K(D);N_SPINR(H),N_SPINS(G),P-FLIGHT
      • Vars
        • P(h);N_GUARD,N_SPINB(e),XR(I)::R(H)
        • P(j);N_GUARD,SBLOCK,XP(J)::S(G)
        • P(f);OGATEB::QAB(K)
        • P(b);N_GUARD::B(A),XR(a)
      • Refutation
        • P(c);
    • Try
      • P(J);
      • Threat
        • P=Q
      • Vars
        • P(h);N_SPINB(e),XR(I)::P=Q
        • P(c);::P=Q
      • Refutation
        • P(f);
  • Actual
    • K(D);N_SPINP(C),N_SPINR(H),N_SPINS(G),S_FLIGHT
    • Vars
      • P(h);N_GUARD,N_SPINB(e),XR(I)::R(H)
      • P(j);N_GUARD,SBLOCK,XP(J)::S(G)
      • P(f);OGATEB::QAB(K)
      • P(b);N_GUARD::B(A),XR(a)
      • P(c);N_GUARD::P(C)
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