MESON Chess Problem Database

Problem Display
PID: 2260 (4R3/K6N/2Ppb3/4k3/3r3p/2Q2n1p/2B4P/5R2 w - - 0 1)

Cook, Eugene Beauharnais

New York Albion, 1863

(First published on Sat Oct 24 1863)

4R3/K6N/2Ppb3/4k3/3r3p/2Q2n1p/2B4P/5R2

#2

8 + 7

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qxd4#
    • 1...Se1
      • 2.Rf5#
    • 1...Sg1
      • 2.Rf5#
    • 1...Sd2
      • 2.Rf5#
    • 1...Sxh2
      • 2.Rf5#
    • 1...Sg5
      • 2.Rf5#
  • Tries
    • 1.Qa5+?
      • 1...Kf4
        • 2.Qg5#
      • 1...d5
        • 2.Qc7#
      • 1...Rd5!
    • 1.Qe3+?
      • 1...Re4
        • 2.Qxe4#
      • 1...Kd5!
  • Keys
    • 1.Qb2!
      • 1...Kf4
        • 2.Qxd4#
      • 1...Kd5
        • 2.Qb5#
      • 1...Sxh2
        • 2.Rf5#
      • 1...d5
        • 2.Qb8#
      • 1...Se1
        • 2.Rf5#
      • 1...Sg1
        • 2.Rf5#
      • 1...Sd2
        • 2.Rf5#
      • 1...Sg5
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINB(g),N_SPINR(c),P_SPINS(a),S_FLIGHT::QAR2(D),XR(c)
    • S(a);OGATE::R1(A)
    • S(a);OGATE,XP(C)::R1(A)
  • Tries
    • Try
      • Q(D);CHECK,N_PINR(c)
      • Vars
        • K(e);N_SPINB(g),OGATE,P_SPINS(a),S_FLIGHT::QAB1(D)
        • P(f);OGATEB,P_SPINP(f),SBLOCK::QAB(D)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(D);CHECK,N_PINR(c)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(D),XR(c)
      • Refutation
        • K(e);N_SPINB(g),P-FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(e);N_SPINB(g),N_SPINR(c),P_SPINS(a),S_FLIGHT::QAR2(D),XR(c)
      • K(e);N_SPINB(g),N_SPINR(c),P-FLIGHT::QAR2(D)
      • S(a);OGATE,XP(C)::R1(A)
      • P(f);OGATEB,SBLOCK::QAB(D)
      • S(a);OGATE::R1(A)
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