MESON Chess Problem Database

Problem Display
PID: 225480 (1B6/1p2Q3/Bp6/p2pN3/3k2p1/2N2p2/2K5/6b1 w - - 0 1)

Gamza, Grigory Stepanovich

Garaj, Ivan

Praca, 1993

1B6/1p2Q3/Bp6/p2pN3/3k2p1/2N2p2/2K5/6b1

#2

6 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Sxf3#
  • Tries
    • 1.Sb5+?
      • 1...Ke3
        • 2.Sd3#
        • 2.Sxg4#
      • 1...Ke4!
    • 1.Bc7?
      • threat
        • 2.Bxb6#
      • 1...b5
        • 2.Bb6#
      • 1...Ke3!
    • 1.Qb4+?
      • 1...Ke3
        • 2.Sd1#
        • 2.Sxg4#
      • 1...axb4!
    • 1.Qd6?
      • threat
        • 2.Qxb6#
      • 1...b5
        • 2.Qb6#
      • 1...Ke3!
    • 1.Qc7?
      • threat
        • 2.Qxb6#
      • 1...b5
        • 2.Qb6#
      • 1...Ke3!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qxb6#
      • 1...Ke3
        • 2.Sxg4#
      • 1...Kc5
        • 2.Sd3#
      • 1...b5
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD::S(C),XP(b)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(F);
      • Threat
        • B(F),XP(g)
      • Vars
        • P(g);::B(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • P(e);XQ(E)
    • Try
      • Q(E);P_PINP(f)
      • Threat
        • QAB(E),XP(g)
      • Vars
        • P(g);::QAB(E)
      • Refutation
        • K(c);N_SPINP(f),S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAB(E),XP(g)
      • Vars
        • P(g);::QAB(E)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAB(E),XP(g)
    • Vars
      • K(c);S_FLIGHT::S(C),XP(d)
      • K(c);S_FLIGHT::S(C)
      • P(g);::QAB(E)
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