MESON Chess Problem Database

Problem Display
PID: 167775 (3K2B1/2p5/8/2kp1N2/8/1R2R3/P4PQn/3n2Bq w - - 0 1)

Kennard, Walter Irving

Chess Problem Science, 1902

3K2B1/2p5/8/2kp1N2/8/1R2R3/P4PQn/3n2Bq

#2

9 + 6

14868 Pirnie Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg1
      • 2.Qxd5#
    • 1...Sxf2
      • 2.Rec3#
    • 1...Sc3
      • 2.Rexc3#
    • 1...d4
      • 2.Re5#
  • Tries
    • 1.Re7?
      • threat
        • 2.Rxc7#
      • 1...Kc4
        • 2.Rxc7#
      • 1...Kc6
        • 2.Rxc7#
      • 1...c6!
    • 1.Qg7?
      • threat
        • 2.Qxc7#
      • 1...Kc4
        • 2.Qd4#
        • 2.Qxc7#
      • 1...Kc6
        • 2.Qxc7#
      • 1...c6
        • 2.Qd4#
      • 1...d4!
  • Keys
    • 1.f4!
      • threat
        • 2.Rec3#
      • 1...Kc4
        • 2.Re4#
      • 1...Kc6
        • 2.Re6#
      • 1...Qxg1
        • 2.Qxd5#
      • 1...Sxe3
        • 2.Qc2#
      • 1...Sc3
        • 2.Rexc3#
      • 1...d4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_GUARD,XB(A)::QAR1(D),XP(e)
    • S(a);N_GUARD,XP(C)::R(F)
    • S(a);N_GUARD::R(F),XS(a)
    • P(e);OGATEB::R(F)
  • Tries
    • Try
      • R(F);
      • Threat
        • R(F),XP(f)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::R(F),XP(f)
        • K(d);P-FLIGHT,P_SPINP(e)::R1(F),XP(f)
      • Refutation
        • P(f);
    • Try
      • Q(D);
      • Threat
        • QAR2(D),XP(f)
      • Vars
        • K(d);P-FLIGHT::QAR1(D),XP(f)
        • P(f);SBLOCK::QAB1(D)
      • Refutation
        • P(e);
  • Actual
    • P(C);
    • Threat
      • B(A)+R(F),DCHECK
    • Vars
      • K(d);P-FLIGHT,P_SPINP(e)::R(F)
      • Q(b);N_GUARD,XB(A)::QAR1(D),XP(e)
      • S(a);N_GUARD,P_SPINS(a),XR(F)::QAR(D)
      • S(a);::B(A)+R(F),DCHECK,XS(a)
      • P(e);S_CUTQ(b),S_CUTS(a),S_CUTS(a)::R(F)
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