MESON Chess Problem Database

Problem Display
PID: 153405 (2b5/Q1p3K1/4P3/3N1pk1/R5Pp/4P2p/8/1B3r2 w - - 0 1)

Gamza, Grigory Stepanovich

4th Comm., Wola Gulowska, 1994

2b5/Q1p3K1/4P3/3N1pk1/R5Pp/4P2p/8/1B3r2

#2

8 + 7

15345 Wola Gulowska Award 1994

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qe7#
    • 1...c6
      • 2.Qe7#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Qf6#
      • 1...fxg4
        • 2.Qxg4#
      • 1...Rf4
        • 2.Qxf4#
      • 1...f4!
    • 1.Qc5?
      • threat
        • 2.Qe7#
      • 1...fxg4
        • 2.Sf4#
      • 1...f4
        • 2.Sf6#
      • 1...Rf4!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sh7#
      • 1...fxg4
        • 2.Rxg4#
      • 1...Rf4
        • 2.exf4#
      • 1...f4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • P(f);OGATE::QAB(G)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • P(d);OGATE,XP(D)::QAR1(G),XP(d)
        • R(a);N_GUARD::QAB1(G),XR(a)
      • Refutation
        • P(d);
    • Try
      • Q(G);
      • Threat
        • QAB(G)
      • Vars
        • P(d);SBLOCK,XP(D)::QAR(G)+S(E)
        • P(d);::QAR(G)+S(E)
      • Refutation
        • R(a);
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • P(d);OGATE,XP(D)::R1(C),XP(d)
      • R(a);OGATE::P(B),XR(a)
      • P(d);OGATEB::QAR(G)
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