MESON Chess Problem Database

Problem Display
PID: 101150 (B7/8/1p1p4/b1kp4/8/RQ2P3/3p4/3K4 w - - 0 1)

Nield, Joshua

Good Companions, 1918

B7/8/1p1p4/b1kp4/8/RQ2P3/3p4/3K4

#2

5 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Qxd5#
  • Tries
    • 1.Bc6?
      • threat
        • 2.Qb5#
      • 1...b5
        • 2.Qxb5#
      • 1...Bb4
        • 2.Qxd5#
      • 1...Kxc6!
    • 1.Ra4?
      • threat
        • 2.Qxd5#
      • 1...d4
        • 2.Rc4#
        • 2.Qc4#
        • 2.Qd5#
        • 2.exd4#
      • 1...b5!
    • 1.Rxa5+?
      • 1...b5
        • 2.Rxb5#
        • 2.Qxb5#
      • 1...bxa5!
  • Keys
    • 1.Qa4!
      • 1...Bb4
        • 2.Qc6#
      • 1...b5
        • 2.Qd4#
      • 1...Bc3
        • 2.Rxc3#
      • 1...d4
        • 2.exd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::QAR1(C),XP(d)
  • Tries
    • Try
      • B(E);
      • Threat
        • QAR1(C)
      • Vars
        • P(e);::QAR1(C),XP(e)
        • B(b);SBLOCK::QAR1(C),XP(d)
      • Refutation
        • K(c);P-FLIGHT,XB(E)
    • Try
      • R(B);
      • Threat
        • QAR1(C),XP(d)
      • Refutation
        • P(e);
    • Try
      • R(B);CHECK,XB(b)
      • Refutation
        • P(e);XR(B)
  • Actual
    • Q(C);
    • Vars
      • B(b);SBLOCK::QAR1(C)
      • P(e);SBLOCK::QAB1(C)
      • B(b);N_GUARD::R(B),XB(b)
      • P(d);OGATE::P(D),XP(d)
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