MESON Chess Problem Database

Problem Display
PID: 267505 (4RN2/2r1p1K1/2r1B3/1n2kN2/1P1bP2p/8/3Q2n1/B3R3 w - - 0 1)

Daniel, Arthur William

Sunday Referee, 1939

(First published on Sun Feb 12 1939)

4RN2/2r1p1K1/2r1B3/1n2kN2/1P1bP2p/8/3Q2n1/B3R3

#2

10 + 8

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Bxd4#
    • 1...Sd6
      • 2.Bxd4#
    • 1...Sa7
      • 2.Bxd4#
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sf7#
      • 1...Kxd6+
        • 2.e5#
      • 1...exd6+
        • 2.Bd7#
      • 1...Rxd6
        • 2.Qg5#
      • 1...Sxe1
        • 2.Qh2#
      • 1...Sxd6
        • 2.Bxd4#
      • 1...Se3
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(d);N_GUARD::B(A),XB(b)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(e);CHECK,OGATE,S_FLIGHT,XS(F)::P(E)
      • P(h);CHECK,OGATEB,SBLOCK,XS(F)::R(I)+B(G)
      • R(f);SBLOCK,XS(F)::QAR2(C)
      • S(a);OGATE,XR(B)::QAB(C)
      • S(d);N_GUARD,SBLOCK,XS(F)::B(A),XB(b)
      • S(a);OGATE::QAB(C)
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