MESON Chess Problem Database

Problem Display
PID: 108679 (2B4k/7q/R4P2/3K4/7Q/8/8/8 w - - 0 1)

Kopac, Lubos

Zpravodaj Kotva, 1967

2B4k/7q/R4P2/3K4/7Q/8/8/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bf5?
      • threat
        • 2.Ra8#
        • 2.Qxh7#
      • 1...Qxh4
        • 2.Ra8#
      • 1...Qh5
        • 2.Ra8#
      • 1...Qh6
        • 2.Ra8#
      • 1...Kg8!
    • 1.Be6?
      • threat
        • 2.Ra8#
      • 1...Qh5+
        • 2.Qxh5#
      • 1...Qh6
        • 2.Qxh6#
      • 1...Qxh4!
  • Keys
    • 1.Ra8!
      • threat
        • 2.Bh3#
        • 2.Bg4#
        • 2.Bf5#
        • 2.Ba6#
        • 2.Be6#
        • 2.Bb7#
        • 2.Bd7#
      • 1...Qh5+
        • 2.Bf5#
      • 1...Kg8
        • 2.Be6#
      • 1...Qxh4
        • 2.Bf5#
      • 1...Qh6
        • 2.Bf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);N_SPINQ(a),XQ(A)::R(C)
        • Q(a);P_PINB(E)::R(C)
        • Q(a);::R(C)
      • Refutation
        • K(b);N_SPINQ(a),P-FLIGHT
    • Try
      • B(E);
      • Threat
        • R(C)
      • Vars
        • Q(a);CHECK,OGATEB::QAR(A),XQ(a)
        • Q(a);OGATEB::QAR2(A),XQ(a)
      • Refutation
        • Q(a);N_SPINQ(a),XQ(A)
  • Actual
    • R(C);
    • Threat
      • DUALS(7)
    • Vars
      • Q(a);CHECK::R(C)+B(E)
      • K(b);N_SPINQ(a),P-FLIGHT::R(C)+B(E),DCHECK
      • Q(a);N_SPINQ(a),XQ(A)::R(C)+B(E)
      • Q(a);::R(C)+B(E)
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