MESON Chess Problem Database

Problem Display
PID: 47716 (kr1B4/3N4/K1R2Q2/8/8/8/8/8 w - - 0 1)

Belik, Nikolai Ivanovich

Prize, Listova Gospodarstvo, 1994

kr1B4/3N4/K1R2Q2/8/8/8/8/8

#2

5 + 2

4883 Still More Fun with Chess Miniatures 2002
145 StrateGems 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rc8
      • 2.Rxc8#
    • 1...Rxd8
      • 2.Qxd8#
  • Tries
    • 1.Qh8?
      • 1...Rb6+
        • 2.Bxb6#
      • 1...Rxd8
        • 2.Qxd8#
      • 1...Rb1
        • 2.Bb6#
      • 1...Rb2
        • 2.Bb6#
      • 1...Rb3
        • 2.Bb6#
      • 1...Rb4
        • 2.Bb6#
      • 1...Rb5
        • 2.Bb6#
      • 1...Rc8
        • 2.Rxc8#
      • 1...Rb7!
    • 1.Qf8?
      • 1...Rb6+
        • 2.Bxb6#
      • 1...Rxd8
        • 2.Qxd8#
      • 1...Rb1
        • 2.Bb6#
      • 1...Rb2
        • 2.Bb6#
      • 1...Rb3
        • 2.Bb6#
      • 1...Rb4
        • 2.Bb6#
      • 1...Rb5
        • 2.Bb6#
      • 1...Rc8
        • 2.Rxc8#
      • 1...Rb7!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Rc8#
      • 1...Rb6+
        • 2.Rxb6#
      • 1...Rc8
        • 2.Rc7#
        • 2.Rxc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(b);OGATEB::R(B),XR(b)
    • R(b);OGATE,XB(E)::QAR(C),XR(b)
  • Tries
    • Try
      • Q(C);
      • Vars
        • R(b);CHECK,OGATEB::QAR(C)+B(E),XR(b)
        • R(b);OGATE,P_SPINR(b),XB(E)::QAR(C),XR(b)
        • R(b);OGATEB::QAR(C)+B(E)
        • R(b);OGATEB::R(B),XR(b)
      • Refutation
        • R(b);
    • Try
      • Q(C);
      • Vars
        • R(b);CHECK,OGATEB::QAR(C)+B(E),XR(b)
        • R(b);OGATE,P_SPINR(b),XB(E)::QAR(C),XR(b)
        • R(b);OGATEB::QAR(C)+B(E)
        • R(b);OGATEB::R(B),XR(b)
      • Refutation
        • R(b);
  • Actual
    • Q(C);
    • Threat
      • QAB(C)+R(B)
    • Vars
      • R(b);CHECK,N_GUARD::QAB(C)+R(B),XR(b)
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