MESON Chess Problem Database

Problem Display
PID: 96338 (N4K2/n4P2/RNP5/1kp5/1r4R1/1p4n1/6q1/2Q5 w - - 0 1)

Cook, Eugene Beauharnais

Cento Problemi - C. Salvioli, 1897

N4K2/n4P2/RNP5/1kp5/1r4R1/1p4n1/6q1/2Q5

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc6
      • 2.Sc7#
  • Tries
    • 1.Rxb4+?
      • 1...Kxb4
        • 2.Qc4#
      • 1...Kxa6
        • 2.Qa3#
      • 1...cxb4
        • 2.Sc7#
        • 2.Qc4#
      • 1...Kxc6!
    • 1.Qxc5+?
      • 1...Kxa6
        • 2.Sc7#
      • 1...Kxc5!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sc7#
      • 1...Kxa6
        • 2.Sc7#
      • 1...Qxc6
        • 2.Ra5#
      • 1...Rxc4
        • 2.Qxc4#
      • 1...Ra4
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(g);SBLOCK,XP(E)::S(G)
  • Tries
    • Try
      • R(B);CHECK,XR(d)
      • Vars
        • K(e);P-FLIGHT,XR(B)::QAR1(A)
        • K(e);S_FLIGHT,XR(C)::QAR(A)
      • Refutation
        • K(e);P_SPINP(f),S_FLIGHT,XP(E)
    • Try
      • Q(A);CHECK,XP(f)
      • Vars
        • K(e);S_FLIGHT,XR(C)::S(G)
      • Refutation
        • K(e);P-FLIGHT,XQ(A)
  • Actual
    • S(D);
    • Threat
      • S(G)
    • Vars
      • K(e);S_FLIGHT,XR(C)::S(G)
      • Q(a);SBLOCK,XP(E)::R1(C)
      • R(d);OGATE,XS(D)::QAB1(A),XR(d)
      • R(d);SBLOCK::R1(C)
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