MESON Chess Problem Database

Problem Display
PID: 2223 (8/p7/K7/Q3NR2/3kp2N/6p1/8/5n2 w - - 0 1)

Cook, Eugene Beauharnais

Source?, 0000

8/p7/K7/Q3NR2/3kp2N/6p1/8/5n2

#2

5 + 5

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Rf4#
  • Tries
    • 1.Shf3+?
      • 1...Ke3
        • 2.Qe1#
      • 1...exf3!
    • 1.Rxf1?
      • threat
        • 2.Sf5#
      • 1...e3
        • 2.Rf4#
      • 1...Ke3!
    • 1.Rf4?
      • threat
        • 2.Sf5#
      • 1...Se3
        • 2.Shf3#
      • 1...Ke3!
  • Keys
    • 1.Rf2!
      • threat
        • 2.Sf5#
      • 1...Ke3
        • 2.Qc5#
      • 1...Se3
        • 2.Rd2#
      • 1...e3
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATEB,SBLOCK::R(D)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(B)
      • Refutation
        • P(d);XS(A)
    • Try
      • R(D);XS(a)
      • Threat
        • S(A)
      • Vars
        • P(d);OGATEB,SBLOCK::R(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);P_PINP(d)
      • Threat
        • S(A)
      • Vars
        • S(a);SBLOCK::S(A)
      • Refutation
        • K(c);N_SPINP(d),S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • S(A)
    • Vars
      • K(c);S_FLIGHT::QAB(B)
      • S(a);N_GUARD,SBLOCK::R(D)
      • P(d);OGATEB,SBLOCK::R(D)
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