MESON Chess Problem Database

Problem Display
PID: 108739 (K1nn1N2/2ppbQ2/1pk1p2R/1N5R/3P2p1/7p/Bp6/8 w - - 0 1)

Kwiatkowski, Marek

Match: Netherlands - Poland, 1991

K1nn1N2/2ppbQ2/1pk1p2R/1N5R/3P2p1/7p/Bp6/8

#2

8 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Qxd7#
    • 1...Bb4
      • 2.Qxd7#
    • 1...Bh4
      • 2.Qxd7#
    • 1...Bc5
      • 2.Qxd7#
    • 1...Bg5
      • 2.Qxd7#
    • 1...Bd6
      • 2.Qxd7#
    • 1...Bf6
      • 2.Qxd7#
    • 1...Sd6
      • 2.Sa7#
    • 1...d5
      • 2.Qe8#
    • 1...d6
      • 2.Qe8#
  • Tries
    • 1.Sa7+?
      • 1...Kd6
        • 2.Rd5#
        • 2.Qf4#
      • 1...Sxa7!
    • 1.Bxe6?
      • threat
        • 2.Bxd7#
      • 1...dxe6
        • 2.Qe8#
      • 1...d5
        • 2.Bd7#
        • 2.Qe8#
      • 1...d6
        • 2.Bd7#
        • 2.Qe8#
      • 1...Sxe6!
    • 1.Rc5+?
      • 1...Bxc5
        • 2.Qxd7#
      • 1...bxc5!
    • 1.Rxe6+?
      • 1...Bd6
        • 2.Qxd7#
      • 1...Sd6
        • 2.Sa7#
      • 1...dxe6
        • 2.Qe8#
      • 1...d6
        • 2.Qe8#
      • 1...Sxe6!
    • 1.Qf3+?
      • 1...d5
        • 2.Qxd5#
      • 1...gxf3!
    • 1.Qf5?
      • threat
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...Bd6
        • 2.Qe4#
      • 1...Bf6
        • 2.Qc2#
      • 1...Sd6
        • 2.Sa7#
      • 1...d6
        • 2.Qc2#
      • 1...Bc5!
    • 1.Qxe7?
      • threat
        • 2.Qxd7#
      • 1...d5
        • 2.Qd7#
        • 2.Qe8#
      • 1...d6
        • 2.Qxc7#
        • 2.Qd7#
        • 2.Qe8#
      • 1...Sxe7!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Bd5#
      • 1...Bg5
        • 2.Qc4#
      • 1...Bd6
        • 2.Qh1#
      • 1...Bf6
        • 2.Qc4#
      • 1...Sd6
        • 2.Sa7#
      • 1...d5
        • 2.Bxd5#
      • 1...d6
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • B(i);OGATE::QAB1(F),XP(h)
    • B(i);N_SPINP(f),OGATE::QAB1(F),XP(h)
    • S(j);N_GUARD,N_SPINP(f),SBLOCK::S(C)
    • P(h);OGATEB::QAB(F)
    • P(h);N_SPINP(f),OGATEB::QAB(F)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • S(j);XS(C)
    • Try
      • B(A);XP(f)
      • Threat
        • R(E)+B(A),DCHECK,XP(h)
      • Vars
        • P(h);OGATEB,P_SPINP(h),XB(A)::QAB(F)
      • Refutation
        • S(k);P_SPINS(k),XB(A)
    • Try
      • R(D);CHECK
      • Vars
        • B(i);OGATE,XR(D)::QAB1(F),XP(h)
      • Refutation
        • P(d);XR(D)
    • Try
      • R(E);CHECK,XP(f)
      • Vars
        • B(i);OGATE,P_SPINB(i)::QAB1(F),XP(h)
        • S(j);P_SPINS(j)::S(C)
        • P(h);S_CUTB(i),S_CUTS(j),S_CUTS(k),XR(E)::QAB(F)
        • P(h);P_SPINP(h),S_CUTB(i),S_CUTS(j),S_CUTS(k)::QAB(F)
      • Refutation
        • S(k);XR(E)
    • Try
      • Q(F);CHECK
      • Vars
        • P(h);N_SPINP(f),P_SPINP(h)::QAB1(F),XP(h)
      • Refutation
        • P(c);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • P(h);::QAB1(F),XP(h)
        • B(i);N_SPINP(f),S_CUTP(h)::QAB(F)
        • B(i);N_GUARD,N_SPINP(f)::QAR(F)
        • S(j);N_GUARD,N_SPINP(f),SBLOCK::S(C)
        • P(h);N_SPINP(f),S_CUTB(i)::QAR(F)
      • Refutation
        • B(i);
    • Try
      • Q(F);XB(i)
      • Threat
        • QAB1(F),XP(h)
      • Refutation
        • S(j);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • B(A)
    • Vars
      • B(i);N_GUARD::QAR2(F)
      • B(i);N_SPINP(f),S_CUTP(h)::QAB(F)
      • B(i);N_GUARD,N_SPINP(f)::QAR2(F)
      • S(j);N_GUARD,N_SPINP(f),SBLOCK::S(C)
      • P(h);::B(A),XP(h)
      • P(h);N_SPINP(f),S_CUTB(i)::QAR2(F)
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