MESON Chess Problem Database

Problem Display
PID: 46117 (8/7Q/2PN2p1/5pK1/4Ppp1/1p2pkP1/1P5R/3NB3 w - - 0 1)

Pavlov, Mikhail Aleksandrovich

1st Comm., Szachy, 1978

8/7Q/2PN2p1/5pK1/4Ppp1/1p2pkP1/1P5R/3NB3

#2

10 + 7

56 The Problemist 2002
56 The Problemist 2008

SOLUTION

  • SOUND
  • Tries
    • 1.Rf2+?
      • 1...Kxg3
        • 2.Qh2#
        • 2.Qh4#
      • 1...exf2!
    • 1.Qxg6?
      • 1...fxg3
        • 2.Qxf5#
      • 1...fxe4
        • 2.Qxe4#
      • 1...e2!
    • 1.Qh3?
      • threat
        • 2.Qf1#
        • 2.Qg2#
      • 1...e2
        • 2.Rf2#
        • 2.Qg2#
      • 1...gxh3!
    • 1.Qa7?
      • 1...fxg3
        • 2.Qxe3#
      • 1...e2
        • 2.Qf2#
      • 1...fxe4!
    • 1.Qf7?
      • 1...fxe4
        • 2.Qxf4#
      • 1...e2
        • 2.Qxb3#
      • 1...fxg3!
  • Keys
    • 1.Qh4!
      • 1...fxg3
        • 2.Qxg3#
      • 1...fxe4
        • 2.Qxg4#
      • 1...e2
        • 2.Rf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • P(b);XR(D)
    • Try
      • Q(J);XP(g)
      • Vars
        • P(d);OGATEB,XP(E)::QAR2(J),XP(f)
        • P(f);OGATE,XP(F)::QAB1(J),XP(f)
      • Refutation
        • P(b);
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);XQ(J)
    • Try
      • Q(J);
      • Vars
        • P(d);N_GUARD,XP(E)::QAR1(J),XP(b)
        • P(b);OGATE::QAR1(J)
      • Refutation
        • P(f);XP(F)
    • Try
      • Q(J);
      • Vars
        • P(f);OGATE,P_SPINP(d),XP(F)::QAR1(J),XP(d)
        • P(b);OGATEB::QAR(J),XP(a)
      • Refutation
        • P(d);P_SPINP(f),XP(E)
  • Actual
    • Q(J);
    • Vars
      • P(d);OGATE,XP(E)::QAR1(J),XP(d)
      • P(f);N_GUARD,XP(F)::QAB1(J),XP(e)
      • P(b);N_GUARD::R1(D)
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