MESON Chess Problem Database

Problem Display
PID: 224335 (7B/KpN5/pPpR1R2/2k2P2/q7/1P6/1bP5/N3Q3 w - - 0 1)

Luke, R

Sunday Chronicle, 1944

(First published on Sun Sep 10 1944)

7B/KpN5/pPpR1R2/2k2P2/q7/1P6/1bP5/N3Q3

#2

11 + 6

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Qa5#
    • 1...Qe4
      • 2.Qa5#
    • 1...Qf4
      • 2.Qa5#
    • 1...Qg4
      • 2.Qa5#
    • 1...Qh4
      • 2.Qa5#
    • 1...Qa5
      • 2.Qxa5#
  • Tries
    • 1.Qc3+?
      • 1...Qc4
        • 2.Qxc4#
        • 2.b4#
      • 1...Bxc3!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Qe5#
      • 1...Kxd4
        • 2.Rxc6#
      • 1...Qxb3
        • 2.Sxb3#
      • 1...Qxd4
        • 2.Qa5#
      • 1...Bxd4
        • 2.Qe7#
      • 1...Qc4
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(b);N_GUARD::QAR2(B)
    • Q(b);N_GUARD::QAR2(B),XQ(b)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • B(a);XQ(B)
  • Actual
    • R(G);
    • Threat
      • QAR2(B)
    • Vars
      • K(c);S_FLIGHT,XR(G)::B(K)+R(H),XP(e)
      • Q(b);XP(D)::S(A),XQ(b)
      • Q(b);N_GUARD,SBLOCK,XR(G)::QAR2(B)
      • B(a);SBLOCK,XR(G)::QAB(B)
      • Q(b);N_GUARD::R1(G),XQ(b)
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