MESON Chess Problem Database

Problem Display
PID: 105813 (4N2k/7r/6B1/4K3/8/8/8/Q6R w - - 0 1)

Kolpakov, Viktor Sergeevich

Chepizhni-60 JT (Kudesnik), 1994

4N2k/7r/6B1/4K3/8/8/8/Q6R

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qa2?
      • threat
        • 2.Rxh7#
      • 1...Rh5+
        • 2.Rxh5#
      • 1...Rh2
        • 2.Rxh2#
      • 1...Rh3
        • 2.Rxh3#
      • 1...Rh4
        • 2.Rxh4#
      • 1...Rh6
        • 2.Rxh6#
      • 1...Rxh1!
  • Keys
    • 1.Bf7!
      • threat
        • 2.Ke4#
        • 2.Kf4#
        • 2.Kd5#
        • 2.Kf5#
        • 2.Kd6#
        • 2.Ke6#
      • 1...Rh5+
        • 2.Rxh5#
      • 1...Rxh1
        • 2.Qxh1#
      • 1...Rh2
        • 2.Rxh2#
      • 1...Rh3
        • 2.Rxh3#
      • 1...Rh4
        • 2.Rxh4#
      • 1...Rh6
        • 2.Rxh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • R1(B),XR(a)
      • Vars
        • R(a);CHECK,OGATEB::R(B),XR(a)
        • R(a);OGATEB::R(B),XR(a)
      • Refutation
        • R(a);N_SPINR(a),XR(B)
  • Actual
    • B(D);
    • Threat
      • DUALS(6)
    • Vars
      • R(a);CHECK,OGATEB::R(B),XR(a)
      • R(a);N_SPINR(a),OGATE,XR(B)::QAB(A),XR(a)
      • R(a);OGATEB::R(B),XR(a)
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