MESON Chess Problem Database

Problem Display
PID: 244497 (3k4/2p5/bP2Q3/8/7K/8/8/4B3 w - - 0 1)

Fomichev, Evgeny Vasilevich

Kudesnik, 2006

3k4/2p5/bP2Q3/8/7K/8/8/4B3

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bg3?
      • threat
        • 2.Bxc7#
        • 2.bxc7#
      • 1...c5
        • 2.Bc7#
      • 1...c6
        • 2.Bc7#
      • 1...cxb6!
    • 1.Qe7+?
      • 1...Kc8
        • 2.Qxc7#
      • 1...Kxe7!
    • 1.b7?
      • 1...c5
        • 2.Ba5#
      • 1...c6
        • 2.Ba5#
      • 1...Bf1
        • 2.b8Q#
        • 2.b8R#
      • 1...Be2
        • 2.b8Q#
        • 2.b8R#
      • 1...Bd3
        • 2.b8Q#
        • 2.b8R#
      • 1...Bc4
        • 2.b8Q#
        • 2.b8R#
      • 1...Bb5
        • 2.b8Q#
        • 2.b8R#
      • 1...Bxb7!
  • Keys
    • 1.Ba5!
      • threat
        • 2.bxc7#
      • 1...cxb6
        • 2.Bxb6#
      • 1...c5
        • 2.b7#
      • 1...c6
        • 2.b7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::B(A)
      • Refutation
        • P(b);XP(C)
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(D),XP(b)
      • Refutation
        • K(c);S_FLIGHT,XQ(D)
    • Try
      • P(C);
      • Vars
        • P(b);OGATEB::B(A)
        • B(a);N_GUARD::P=Q
      • Refutation
        • B(a);XP(C)
  • Actual
    • B(A);
    • Threat
      • P(C),XP(b)
    • Vars
      • P(b);OGATE,P_SPINP(b),XP(C)::B(A),XP(b)
      • P(b);::B(A)+P(C)
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