MESON Chess Problem Database

Problem Display
PID: 259409 (2bR4/3p4/2p5/1p3p2/1QBk1K2/8/3P4/8 w - - 0 1)

Eddy, Edwin John

Western Morning News, 1924

(First published on Sat Jun 28 1924)

2bR4/3p4/2p5/1p3p2/1QBk1K2/8/3P4/8

#2

5 + 6

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Rxd7#
    • 1...Bb7
      • 2.Rxd7#
    • 1...bxc4
      • 2.Qd6#
    • 1...c5
      • 2.Qc3#
    • 1...d5
      • 2.Bf1#
      • 2.Be2#
      • 2.Bxb5#
    • 1...d6
      • 2.Rxd6#
  • Tries
    • 1.Rxc8?
      • 1...bxc4
        • 2.Qd6#
      • 1...c5
        • 2.Qc3#
        • 2.Qxc5#
      • 1...d5
        • 2.Bf1#
        • 2.Be2#
        • 2.Bxb5#
      • 1...d6!
  • Keys
    • 1.d3!
      • 1...bxc4
        • 2.Qxc4#
      • 1...Ba6
        • 2.Rxd7#
      • 1...Bb7
        • 2.Rxd7#
      • 1...c5
        • 2.Qb2#
      • 1...d5
        • 2.Bxb5#
      • 1...d6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD::R(E),XP(e)
    • P(b);N_SPINP(e),P_SPINP(b),SBLOCK,XB(C)::QAR2(B)
    • P(d);SBLOCK::QAB1(B)
    • P(e);OGATE::R(E),XP(e)
  • Tries
    • Try
      • R(E);N_PINP(e),XB(f)
      • Vars
        • P(b);P_SPINP(b),SBLOCK,XB(C)::QAR2(B)
      • Refutation
        • P(e);
  • Actual
    • P(A);
    • Vars
      • P(b);N_SPINP(e),OGATE,P_SPINP(b),XB(C)::QAR1(B),XP(b)
      • B(f);N_GUARD::R(E),XP(e)
      • P(d);SBLOCK::QAB(B)
      • P(e);::QAR(B)+B(C),XP(b)
      • P(e);OGATE::R(E),XP(e)
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