MESON Chess Problem Database

Problem Display
PID: 175025 (8/1K1pQ3/8/2pk4/8/B6B/4P3/8 w - - 0 1)

Browne, AL

Boston Sunday Post, 1901

8/1K1pQ3/8/2pk4/8/B6B/4P3/8

#2

5 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Bb2?
      • 1...c4
        • 2.Bg2#
        • 2.Qe5#
        • 2.e4#
      • 1...d6
        • 2.Qe6#
      • 1...Kc4!
    • 1.Bg2+?
      • 1...Kd4
        • 2.Qxc5#
      • 1...Kc4!
    • 1.Bf5?
      • threat
        • 2.Qxc5#
      • 1...Kd4
        • 2.Qxc5#
      • 1...c4
        • 2.Qc5#
        • 2.Qd6#
        • 2.Qe4#
      • 1...d6
        • 2.Qe4#
      • 1...Kc4!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Bb2#
      • 1...dxe6!
    • 1.e3?
      • 1...c4
        • 2.Bg2#
      • 1...d6
        • 2.Qe6#
      • 1...Kc4!
  • Keys
    • 1.Qe3!
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd6
        • 2.Qxc5#
      • 1...c4
        • 2.Bg2#
      • 1...d6
        • 2.Be6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • P(c);N_GUARD::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(E),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(C);
      • Threat
        • QAR1(E),XP(a)
      • Vars
        • K(b);P-FLIGHT::QAB1(E),XP(a)
        • P(c);SBLOCK::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::B(B)
      • Refutation
        • P(c);XQ(E)
    • Try
      • P(A);
      • Vars
        • P(a);SBLOCK::B(C)
        • P(c);N_GUARD::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(b);S_FLIGHT::QAB1(E)
      • K(b);P-FLIGHT,P_SPINP(a)::QAB1(E),XP(a)
      • P(a);SBLOCK::B(C)
      • P(c);N_GUARD,SBLOCK::B(C)
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