MESON Chess Problem Database

Problem Display
PID: 251874 (7Q/7b/6n1/R3q3/N1P2pK1/3B4/2P5/k2NR3 w - - 0 1)

Papack, Daniel

3rd Prize, Schach, 1994

7Q/7b/6n1/R3q3/N1P2pK1/3B4/2P5/k2NR3

#2

9 + 5

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kb1
      • 2.Sdc3#
    • 1...Ka2
      • 2.Sac3#
    • 1...Qb2
      • 2.Qxb2#
    • 1...Qc3
      • 2.Sdxc3#
      • 2.Saxc3#
    • 1...Qd4
      • 2.Sdc3#
      • 2.Sac3#
    • 1...Qf6
      • 2.Sdc3#
      • 2.Sac3#
    • 1...Qg7
      • 2.Sdc3#
      • 2.Sac3#
    • 1...Qxh8
      • 2.Sdc3#
      • 2.Sac3#
  • Tries
    • 1.Be2?
      • threat
        • 2.Sdc3#
      • 1...Ka2
        • 2.Sac3#
      • 1...Qb2
        • 2.Qxb2#
      • 1...Qc3
        • 2.Sdxc3#
        • 2.Saxc3#
      • 1...Qd4
        • 2.Sac3#
      • 1...Kb1!
    • 1.Qxe5+?
      • 1...Kb1
        • 2.Sdc3#
        • 2.Qb2#
      • 1...Ka2
        • 2.Sac3#
        • 2.Qb2#
      • 1...Sxe5+!
    • 1.c5?
      • threat
        • 2.Sac3#
      • 1...Kb1
        • 2.Sdc3#
      • 1...Ka2
        • 2.Sac3#
      • 1...Qb2
        • 2.Qxb2#
      • 1...Qc3
        • 2.Sdxc3#
        • 2.Saxc3#
      • 1...Qd4
        • 2.Sdc3#
      • 1...Bg8!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sdc3#
      • 1...Kb1
        • 2.Sdc3#
      • 1...Ka2
        • 2.Sac3#
      • 1...Qb2
        • 2.Qxb2#
      • 1...Qc3
        • 2.Sdxc3#
        • 2.Saxc3#
      • 1...Qd4
        • 2.Sac3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINQ(c),P-FLIGHT::R(B)+S(A),DCHECK
    • K(a);N_SPINQ(c),P-FLIGHT::R(H)+S(E),DCHECK
    • Q(c);OGATE::QAB1(I),XQ(c)
  • Tries
    • Try
      • B(D);
      • Threat
        • R(B)+S(A)
      • Vars
        • K(a);N_SPINQ(c),P-FLIGHT::R(H)+S(E),DCHECK
        • Q(c);OGATE::QAB1(I),XQ(c)
        • Q(c);N_GUARD::R(H)+S(E)
      • Refutation
        • K(a);N_SPINQ(c),P-FLIGHT
    • Try
      • Q(I);CHECK,XQ(c)
      • Refutation
        • S(d);CHECK,XQ(I)
    • Try
      • P(F);
      • Threat
        • R(H)+S(E)
      • Vars
        • K(a);N_SPINQ(c),P-FLIGHT::R(B)+S(A),DCHECK
        • K(a);N_SPINQ(c),P-FLIGHT::R(H)+S(E),DCHECK
        • Q(c);OGATE::QAB1(I),XQ(c)
        • Q(c);N_GUARD::R(B)+S(A)
      • Refutation
        • B(e);
  • Actual
    • B(D);
    • Threat
      • R(B)+S(A)
    • Vars
      • K(a);N_SPINQ(c),P-FLIGHT::R(B)+S(A),DCHECK
      • K(a);N_SPINQ(c),P-FLIGHT::R(H)+S(E),DCHECK
      • Q(c);OGATE::QAB1(I),XQ(c)
      • Q(c);N_GUARD::R(H)+S(E)
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