MESON Chess Problem Database

Problem Display
PID: 161477 (4k3/3pbp1N/1B6/8/4B3/1Q6/8/7K w - - 0 1)

Arguelles Ferrer, Antonio Fernandez

Problemas, 1945

4k3/3pbp1N/1B6/8/4B3/1Q6/8/7K

#2

5 + 4

15148 Sadier Collection 2017
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qa4#
      • 2.Qb5#
    • 1...d6
      • 2.Bc6#
      • 2.Qa4#
      • 2.Qb5#
    • 1...f6
      • 2.Bg6#
  • Tries
    • 1.Bg6?
      • threat
        • 2.Bxf7#
        • 2.Qxf7#
      • 1...Ba3
        • 2.Qxf7#
      • 1...Bb4
        • 2.Qxf7#
      • 1...Bh4
        • 2.Qxf7#
      • 1...Bc5
        • 2.Qxf7#
      • 1...Bg5
        • 2.Qxf7#
      • 1...Bd6
        • 2.Qxf7#
      • 1...Bf6
        • 2.Qxf7#
      • 1...Bd8
        • 2.Qxf7#
      • 1...Bf8
        • 2.Qxf7#
      • 1...d5
        • 2.Qa4#
        • 2.Qb5#
      • 1...d6
        • 2.Qa4#
        • 2.Qb5#
      • 1...fxg6!
  • Keys
    • 1.Qe6!
      • 1...dxe6
        • 2.Bc6#
      • 1...fxe6
        • 2.Bg6#
      • 1...d5
        • 2.Qc6#
      • 1...d6
        • 2.Bc6#
      • 1...f5
        • 2.Qg6#
      • 1...f6
        • 2.Bg6#

This anticipates 94874(1950)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB::B(C)
  • Tries
    • Try
      • B(C);P_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::QAB1(B),XP(c)
      • Refutation
        • P(c);N_SPINP(c),XB(C)
  • Actual
    • Q(B);P_PINB(b)
    • Vars
      • P(a);N_SPINB(b),OGATEB,XQ(B)::B(C)
      • P(c);N_SPINB(b),OGATEB,XQ(B)::B(C)
      • P(a);OGATEB::QAB(B)
      • P(a);OGATEB::B(C)
      • P(c);OGATEB::QAB(B)
      • P(c);OGATEB::B(C)
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