MESON Chess Problem Database

Problem Display
PID: 225478 (n1N1R2n/R7/N2p4/2bkp3/P2p4/1K1B4/3Q1p1p/8 w - - 0 1)

Gamza, Grigory Stepanovich

2nd HM., Praca, 1993

(First published on Sat Feb 13 1993)

n1N1R2n/R7/N2p4/2bkp3/P2p4/1K1B4/3Q1p1p/8

#2

8 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Bxe4#
  • Tries
    • 1.Sc7+?
      • 1...Kc6
        • 2.Bb5#
      • 1...Sxc7!
    • 1.Bc4+?
      • 1...Kc6
        • 2.Sb8#
      • 1...Ke4!
    • 1.Qh6?
      • threat
        • 2.Se7#
      • 1...Kc6
        • 2.Be4#
      • 1...e4
        • 2.Bxe4#
      • 1...Sg6!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Sb4#
      • 1...Kc6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(f);::B(C),XP(f)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);S_FLIGHT::B(C)
      • Refutation
        • S(h);XS(E)
    • Try
      • B(C);CHECK,P_PINP(c)
      • Vars
        • K(e);N_SPINP(c),S_FLIGHT::S(E)
      • Refutation
        • K(e);N_SPINP(c),P_SPINP(f),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • K(e);P_SPINP(g),S_FLIGHT::B(C)
        • P(f);::B(C),XP(f)
      • Refutation
        • S(i);
  • Actual
    • Q(A);P_PINB(d)
    • Threat
      • S(E)
    • Vars
      • K(e);N_SPINB(d),S_FLIGHT::S(G)
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