MESON Chess Problem Database

Problem Display
PID: 138657 (R7/8/1p6/b3Q3/2N5/p3p3/1pK5/k7 w - - 0 1)

Baird, Lilian Edith

The Field, 1890

(First published on Sat Dec 27 1890)

R7/8/1p6/b3Q3/2N5/p3p3/1pK5/k7

#2

4 + 6

3530 Het Half Pin Thema (II) 1947
15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Rxa3#
      • 2.Qxb2#
    • 1...Bd2
      • 2.Rxa3#
      • 2.Qxb2#
    • 1...Bc3
      • 2.Rxa3#
    • 1...Bb4
      • 2.Qxb2#
    • 1...a2
      • 2.Qxb2#
  • Tries
    • 1.Sxa3?
      • threat
        • 2.Qxb2#
      • 1...Ka2
        • 2.Qxb2#
      • 1...Bc3!
    • 1.Rxa5?
      • threat
        • 2.Rxa3#
        • 2.Qxb2#
      • 1...Ka2
        • 2.Rxa3#
        • 2.Qxb2#
      • 1...a2
        • 2.Qxb2#
      • 1...bxa5!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qxa3#
      • 1...Ka2
        • 2.Qxa3#
      • 1...Bxc3
        • 2.Rxa3#
      • 1...Bb4
        • 2.Qxb2#
      • 1...a2
        • 2.Qxb2#

There are these versions: 226523

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(e);N_SPINP(b),OGATE,P_SPINP(c)::R(D),XP(c)
    • B(e);S_CUTP(c)::QAB1(C),XP(b)
    • P(c);N_GUARD::QAB1(C),XP(b)
  • Tries
    • Try
      • S(B);XP(c)
      • Threat
        • QAB1(C),XP(b)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C),XP(b)
      • Refutation
        • B(e);N_SPINP(b)
    • Try
      • R(D);XB(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);N_SPINP(b),P_SPINP(c)::QAB1(C),XP(b)
      • Refutation
        • P(f);XR(D)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C),XP(c)
    • Vars
      • K(a);N_SPINP(b),P-FLIGHT::QAR1(C),XP(c)
      • B(e);N_SPINP(b),OGATE,P_SPINP(c),XQ(C)::R(D),XP(c)
      • B(e);S_CUTP(c)::QAB1(C),XP(b)
      • P(c);N_GUARD::QAB1(C),XP(b)
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