MESON Chess Problem Database

Problem Display
PID: 246498 (Q5B1/6n1/4b3/2pN4/3kp1N1/1R1p4/8/K7 w - - 0 1)

Legge, Robin H

The Field, 1905

(First published on Sat Sep 9 1905)

Q5B1/6n1/4b3/2pN4/3kp1N1/1R1p4/8/K7

#2

6 + 6

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5
      • 2.Qxd5#
  • Tries
    • 1.Sdf6?
      • threat
        • 2.Qxe4#
      • 1...Kc4
        • 2.Qa4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bf5
        • 2.Qd5#
      • 1...e3
        • 2.Qe4#
      • 1...c4
        • 2.Qa7#
      • 1...Bxb3!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qxe4#
      • 1...Kc4
        • 2.Qa4#
      • 1...Bxb3
        • 2.Sb5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bf5
        • 2.Sb5#
        • 2.Qd5#
      • 1...e3
        • 2.Qe4#
      • 1...c4
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(e);OGATE,XS(D)::QAR1(E),XB(e)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(E),XP(c)
      • Vars
        • K(b);P-FLIGHT,P_SPINB(e)::QAR2(E)
        • B(e);N_GUARD::QAR1(E),XB(e)
        • B(e);N_GUARD::QAR1(E)
        • P(c);::QAR1(E)
        • P(d);OGATEB,SBLOCK::QAB(E)
      • Refutation
        • B(e);XR(B)
  • Actual
    • S(D);
    • Threat
      • QAR1(E),XP(c)
    • Vars
      • K(b);P-FLIGHT,P_SPINB(e)::QAR2(E)
      • B(e);XR(B)::S(D)
      • B(e);N_GUARD::QAR1(E),XB(e)
      • P(c);::QAR1(E)
      • P(d);OGATEB,SBLOCK::QAB(E)
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