MESON Chess Problem Database

Problem Display
PID: 15299 (1K6/Bp6/1r1P4/3nk1N1/1N1R3P/2QB1n2/3P4/5R2 w - - 0 1)

Fleck, Ferenc

Comm., Apro JT, 1982

1K6/Bp6/1r1P4/3nk1N1/1N1R3P/2QB1n2/3P4/5R2

#2

11 + 5

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd6
      • 2.Qc7#
    • 1...Kf6
      • 2.Rf4#
      • 2.Rxd5#
    • 1...Se1
      • 2.Rxd5#
    • 1...Sg1
      • 2.Rxd5#
    • 1...Sxd2
      • 2.Rxd5#
    • 1...Sh2
      • 2.Rxd5#
    • 1...Sxh4
      • 2.Rxd5#
    • 1...Sf4
      • 2.Rd5#
  • Tries
    • 1.Re4+?
      • 1...Kf5
        • 2.Rc4#
      • 1...Kxd6!
  • Keys
    • 1.Qc8!
      • 1...Kxd4
        • 2.Sxf3#
      • 1...Kxd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Qh8#
      • 1...Rxb4
        • 2.Qe6#
      • 1...Rxd6
        • 2.Qf5#
      • 1...Sxd2
        • 2.Rxd5#
      • 1...Sxd4
        • 2.Sf7#
      • 1...Sxh4
        • 2.Rxd5#
      • 1...Sxg5
        • 2.Rxd5#
      • 1...Sxb4
        • 2.Qh8#
      • 1...Rb5
        • 2.Qe6#
      • 1...Ra6
        • 2.Qe6#
      • 1...Rc6
        • 2.Qe6#
      • 1...Se1
        • 2.Rxd5#
      • 1...Sg1
        • 2.Rxd5#
      • 1...Sh2
        • 2.Rxd5#
      • 1...Sc3
        • 2.Qh8#
      • 1...Se3
        • 2.Qh8#
      • 1...Sf4
        • 2.Qh8#
      • 1...Sf6
        • 2.Sxf3#
      • 1...Sc7
        • 2.Qh8#
      • 1...Se7
        • 2.Qh8#

Anticipated by 9842(1960)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,P_SPINS(b),S_FLIGHT,XP(I)::QAB1(C)
    • S(a);::QAB(C)+R(F),DCHECK,XS(b)
    • S(a);XP(B)::QAB(C)+R(F),DCHECK,XS(b)
    • S(a);XP(G)::QAB(C)+R(F),DCHECK,XS(b)
    • S(b);SBLOCK::QAB(C)+R(F),DCHECK
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINS(a)::B(D)+R(F)
      • Refutation
        • K(c);S_FLIGHT,XP(I)
  • Actual
    • Q(C);
    • Vars
      • K(c);P_SPINR(d),S_FLIGHT,XR(F)::S(H),XS(a)
      • K(c);OGATEB,P_SPINS(b),S_FLIGHT,XP(I)::QAB1(C)
      • K(c);P_SPINS(a),S_FLIGHT::QAB(C)
      • R(d);XS(E)::QAR1(C)
      • R(d);SBLOCK,XP(I)::QAR1(C)
      • S(a);XP(B)::R1(F),XS(b)
      • S(a);SBLOCK,XR(F)::S(H)
      • S(a);XP(G)::R1(F),XS(b)
      • S(a);XS(H)::R1(F),XS(b)
      • S(b);N_GUARD,XS(E)::QAB(C)
      • R(d);::QAR1(C)
      • S(a);::R1(F),XS(b)
      • S(b);N_GUARD::QAB(C)
      • S(b);SBLOCK::S(H),XS(a)
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