MESON Chess Problem Database

Problem Display
PID: 24230 (1K2B3/4p3/1p1k4/8/4Q3/8/5B2/8 w - - 0 1)

Speckmann, Werner

Die Schwalbe, 1995

1K2B3/4p3/1p1k4/8/4Q3/8/5B2/8

#2

4 + 3

2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2009
3713 Snap 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Be1?
      • threat
        • 2.Bb4#
      • 1...Kc5
        • 2.Bb4#
      • 1...e5!
    • 1.Bg3+?
      • 1...e5
        • 2.Qxe5#
      • 1...Kc5!
    • 1.Bd4?
      • threat
        • 2.Qc6#
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...e6!
    • 1.Bf7?
      • threat
        • 2.Qd5#
        • 2.Qe6#
      • 1...Kd7
        • 2.Qd5#
      • 1...e6
        • 2.Qxe6#
      • 1...e5!
    • 1.Qf5?
      • 1...e5
        • 2.Qd7#
      • 1...b5
        • 2.Bc5#
      • 1...e6!
  • Keys
    • 1.Bh4!
      • threat
        • 2.Bxe7#
      • 1...Kc5
        • 2.Bxe7#
      • 1...e5
        • 2.Qc6#
      • 1...e6
        • 2.Qd4#

This anticipates 24246(1997), 165283(2017)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Threat
        • B(A)
      • Vars
        • K(b);S_FLIGHT::B(A)
      • Refutation
        • P(c);
    • Try
      • B(A);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAB1(B),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(B),XP(c)
      • Refutation
        • P(c);
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
        • P(c);::QAR1(B),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Vars
        • P(c);SBLOCK::QAR1(B)
        • P(a);N_GUARD::B(A)
      • Refutation
        • P(c);
  • Actual
    • B(A);
    • Threat
      • B(A),XP(c)
    • Vars
      • K(b);S_FLIGHT::B(A),XP(c)
      • P(c);SBLOCK::QAR1(B)
      • P(c);SBLOCK::QAR2(B)
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