MESON Chess Problem Database

Problem Display
PID: 222604 (4N3/Rp6/4kp2/QBB5/6R1/8/6K1/8 w - - 0 1)

Balaguer, Emile A

New Orleans Times-Democrat, 1884

4N3/Rp6/4kp2/QBB5/6R1/8/6K1/8

#2

7 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf7
      • 2.Qa2#
  • Tries
    • 1.Bd7+?
      • 1...Kd5
        • 2.Bb6#
      • 1...Ke5
        • 2.Bd4#
        • 2.Bb6#
        • 2.Bd6#
      • 1...Kf7
        • 2.Rg7#
        • 2.Qa2#
      • 1...Kxd7!
    • 1.Qe1+?
      • 1...Kf5
        • 2.Bd7#
        • 2.Qe4#
      • 1...Kf7
        • 2.Bc4#
        • 2.Rg7#
        • 2.Rxb7#
        • 2.Qe7#
      • 1...Kd5!
    • 1.Qc7?
      • 1...Kd5
        • 2.Bc4#
        • 2.Qd6#
      • 1...Kf5
        • 2.Bd7#
      • 1...f5
        • 2.Bc4#
      • 1...b6!
  • Keys
    • 1.Bd6!
      • 1...Kd5
        • 2.Qa2#
      • 1...Kf5
        • 2.Bd7#
      • 1...Kf7
        • 2.Qa2#
      • 1...f5
        • 2.Qa2#
      • 1...b6
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINP(c),S_FLIGHT::QAB(C)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR(C)+B(E)
      • Refutation
        • K(a);P_SPINP(c),S_FLIGHT,XB(D)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::B(D)
        • P(b);SBLOCK::B(D)
      • Refutation
        • P(c);
  • Actual
    • B(E);
    • Vars
      • K(a);S_FLIGHT::QAB(C)
      • K(a);S_FLIGHT::QAR(C)+B(D),DCHECK
      • K(a);P_SPINP(c),S_FLIGHT::QAB(C)
      • P(b);SBLOCK::QAB(C)
      • P(c);::B(D)
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