MESON Chess Problem Database

Problem Display
PID: 37451 (2Q5/1pP2p2/1P1P1p2/2K1PP2/2N1krp1/5pP1/2P2P2/8 w - - 0 1)

Pavlov, Mikhail Aleksandrovich

1st HM., Magadanskaya Pravda, 1993

2Q5/1pP2p2/1P1P1p2/2K1PP2/2N1krp1/5pP1/2P2P2/8

#2

11 + 7

3705 Album Russia (1992-1994) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf5
      • 2.Qxb7#
    • 1...fxe5
      • 2.Sd2#
  • Tries
    • 1.Qd7?
      • 1...fxe5
        • 2.Sd2#
      • 1...Rxf5!
    • 1.Qe8?
      • 1...Rxf5
        • 2.Sd2#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Kxf5!
    • 1.d7?
      • 1...Rxf5
        • 2.Qxb7#
      • 1...fxe5
        • 2.Sd6#
      • 1...Kxf5!
  • Keys
    • 1.Se3!
      • 1...Kxe5
        • 2.Qe8#
      • 1...Rxf5
        • 2.Qxf5#
      • 1...fxe5
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);P_PINP(F),SBLOCK,XP(G)::QAB(K),XP(f)
    • P(e);SBLOCK,XP(F)::S(D)
  • Tries
    • Try
      • Q(K);
      • Vars
        • P(e);SBLOCK,XP(F)::S(D)
      • Refutation
        • R(c);P_PINP(F),XP(G)
    • Try
      • Q(K);
      • Vars
        • R(c);P_PINP(F),SBLOCK,XP(G)::S(D)
        • P(e);OGATE,P_SPINP(e),XP(F)::QAR1(K),XP(e)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
    • Try
      • P(I);
      • Vars
        • R(c);P_PINP(F),SBLOCK,XP(G)::QAB(K),XP(f)
        • P(e);SBLOCK,XP(F)::S(D)
      • Refutation
        • K(b);S_FLIGHT,XP(G)
  • Actual
    • S(D);
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(F)::QAR(K)
      • R(c);OGATE,P_PINP(F),XP(G)::QAB1(K),XR(c)
      • P(e);SBLOCK,XP(F)::QAB(K),XP(f)
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