MESON Chess Problem Database

Problem Display
PID: 143649 (7n/3p1R2/3pk3/p2RN1P1/rp5P/P7/4Q1pr/6Kb w - - 0 1)

Challenger, Alfred Clement

Lady's Pictorial, 1900

7n/3p1R2/3pk3/p2RN1P1/rp5P/P7/4Q1pr/6Kb

#2

8 + 10

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Rf6+?
      • 1...Ke7
        • 2.Sc6#
      • 1...Kxd5!
    • 1.Re7+?
      • 1...Kxd5
        • 2.Qc4#
      • 1...Kf5
        • 2.Qf3#
        • 2.Qg4#
      • 1...Kxe7!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sc4#
        • 2.Sg4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sf7#
      • 1...Kxd5
        • 2.Qc4#
      • 1...Kxf5
        • 2.Qg4#
      • 1...Ke7
        • 2.Sc6#
      • 1...Rxh4
        • 2.Sg4#
      • 1...Rxa3
        • 2.Sd3#
      • 1...bxa3
        • 2.Sc4#
      • 1...dxe5
        • 2.Qxe5#
      • 1...Rh3
        • 2.Sf3#
      • 1...Sg6
        • 2.Sxg6#
      • 1...Sf7
        • 2.Sxf7#
      • 1...b3
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • K(h);P-FLIGHT::QAR(B)+S(F),DCHECK
      • Refutation
        • K(h);S_FLIGHT,XR(E)
    • Try
      • R(H);CHECK
      • Vars
        • K(h);S_FLIGHT,XR(E)::QAB1(B)
      • Refutation
        • K(h);P-FLIGHT,XR(H)
  • Actual
    • R(H);
    • Threat
      • DUALS(7)
    • Vars
      • K(h);OGATEB,S_FLIGHT,XR(E)::QAB1(B)
      • K(h);OGATEB,S_FLIGHT,XR(H)::QAB1(B)
      • K(h);P-FLIGHT::QAR(B)+S(F),DCHECK
      • R(c);XP(D)::QAR(B)+S(F)
      • R(d);XP(C)::QAR(B)+S(F)
      • P(e);XP(C)::QAR(B)+S(F)
      • P(g);OGATE,P_SPINP(g),XS(F)::QAR1(B),XP(g)
      • R(c);::QAR(B)+S(F)
      • S(j);::QAR(B)+S(F),XS(j)
      • P(e);::QAR(B)+S(F)
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