MESON Chess Problem Database

Problem Display
PID: 95363 (3b3B/1K6/1p6/1Nkpp3/8/2P2P2/P5Q1/5B2 w - - 0 1)

Godbout, Alain J

Osnabrueck Neue Zeiting, 1998

3b3B/1K6/1p6/1Nkpp3/8/2P2P2/P5Q1/5B2

#2

8 + 5

6490 yacpdb 2009
5454 Near Snap 2014
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Bd4#
  • Tries
    • 1.Bxe5?
      • threat
        • 2.Bd4#
        • 2.Bd6#
      • 1...Bf6
        • 2.Bd6#
      • 1...Bc7
        • 2.Bd4#
      • 1...Be7
        • 2.Bd4#
      • 1...d4!
    • 1.Qg4?
      • threat
        • 2.Qb4#
      • 1...e4
        • 2.Bd4#
      • 1...d4!
    • 1.Qg6?
      • threat
        • 2.Qc6#
        • 2.Qd6#
      • 1...Bc7
        • 2.Qc6#
      • 1...Be7
        • 2.Qxb6#
        • 2.Qc6#
      • 1...Bf6!
    • 1.Qg8?
      • 1...Bh4
        • 2.Qc8#
      • 1...Bg5
        • 2.Qc8#
      • 1...Bf6
        • 2.Qc8#
      • 1...Be7
        • 2.Qc8#
      • 1...d4
        • 2.Qc4#
      • 1...e4
        • 2.Bd4#
      • 1...Bc7!
  • Keys
    • 1.Qg7!
      • 1...d4
        • 2.Qxe5#
      • 1...Bh4
        • 2.Qc7#
      • 1...Bg5
        • 2.Qc7#
      • 1...Bf6
        • 2.Qc7#
      • 1...Bc7
        • 2.Qxc7#
      • 1...Be7
        • 2.Qxe7#
      • 1...e4
        • 2.Qd4#

Anticipated by 114289(1982)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE::B(H)
  • Tries
    • Try
      • B(H);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::B(H)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • P(c);OGATE::B(H)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::QAR1(C)
      • Refutation
        • B(e);
    • Try
      • Q(C);
      • Vars
        • B(e);OGATE::QAR(C)
        • P(b);OGATE::QAR1(C)
        • P(c);OGATE::B(H)
      • Refutation
        • B(e);
  • Actual
    • Q(C);
    • Vars
      • P(b);OGATEB::QAR2(C),XP(c)
      • B(e);N_GUARD::QAR2(C)
      • B(e);N_GUARD::QAR2(C),XB(e)
      • B(e);N_GUARD::QAB(C),XB(e)
      • P(c);OGATE::QAB1(C)
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