MESON Chess Problem Database

Problem Display
PID: 206527 (Nn6/r4b2/1P1kP1p1/2N3Qp/1pnP1K2/3RpB2/1r5B/2R5 w - - 0 1)

Clark, Cecil Henry Douglas

Brisbane Courier, 1925

Nn6/r4b2/1P1kP1p1/2N3Qp/1pnP1K2/3RpB2/1r5B/2R5

#2

11 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re7
      • 2.Qd5#
    • 1...Sd2
      • 2.Kxe3#
    • 1...Se5
      • 2.dxe5#
  • Tries
    • 1.Sc7?
      • threat
        • 2.Sb5#
      • 1...Ra5
        • 2.Sb7#
      • 1...Be8
        • 2.Sxe8#
      • 1...Sa3
        • 2.Se4#
      • 1...Rxc7!
  • Keys
    • 1.d5!
      • threat
        • 2.Se4#
      • 1...Kxc5
        • 2.d6#
      • 1...Bxe6
        • 2.dxe6#
      • 1...Sd2
        • 2.Kxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(h);SBLOCK::QAR1(H)
    • S(d);::B(B)+K(F),XP(b)
    • S(d);OGATE::R(C)+P(E)DCHECK,XS(d)
  • Tries
    • Try
      • S(K);
      • Threat
        • S(K)
      • Vars
        • R(h);N_GUARD::S(G)
        • B(i);N_GUARD::S(K),XB(i)
        • S(d);::S(G)
      • Refutation
        • R(h);XS(K)
  • Actual
    • P(E);
    • Threat
      • S(G)
    • Vars
      • K(f);OGATE,P_SPINS(d),S_FLIGHT,XS(G)::QAR(H)+P(E)
      • B(i);OGATE,XP(J)::R(C)+P(E),XB(i)
      • S(d);::B(B)+K(F),XP(b)
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