MESON Chess Problem Database

Problem Display
PID: 143237 (6K1/8/RB1pPp2/4kp2/4N2Q/2P5/8/7B w - - 0 1)

Fellows, Arthur G

British Chess Magazine, 1893

6K1/8/RB1pPp2/4kp2/4N2Q/2P5/8/7B

#2

8 + 4

4817 English Mechanic and World of Science 1895
14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...fxe4
      • 2.Qxe4#
    • 1...d5
      • 2.Bd4#
      • 2.Bc7#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Qd4#
      • 1...dxc5
        • 2.Bc7#
      • 1...d5
        • 2.Bc7#
      • 1...f4!
    • 1.Qxf6+?
      • 1...Kd5
        • 2.Sd2#
      • 1...Kf4!
    • 1.Qf4+?
      • 1...Kd5
        • 2.Sc5#
        • 2.Sg5#
      • 1...Kxe6
        • 2.Qxd6#
      • 1...Kxf4!
  • Keys
    • 1.Qe1!
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd5
        • 2.Sd2#
      • 1...Kxe6
        • 2.Sc5#
      • 1...fxe4
        • 2.Qxe4#
      • 1...f4
        • 2.Sg3#
      • 1...d5
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE,XS(C)::QAR1(D),XP(b)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(D)
      • Vars
        • P(c);OGATEB,XS(C)::B(F)
        • P(c);OGATEB::B(F)
      • Refutation
        • P(b);
    • Try
      • Q(D);CHECK,XP(d)
      • Vars
        • K(a);P-FLIGHT::B(A)+S(C)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,XP(G)::QAR1(D),XP(c)
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);P-FLIGHT::B(A)+S(C)
      • K(a);P-FLIGHT,XP(G)::QAR(D)+S(C),DCHECK
      • P(b);OGATE,P_SPINP(b),XS(C)::QAR1(D),XP(b)
      • P(b);SBLOCK::QAR(D)+S(C)
      • P(c);OGATEB,SBLOCK::B(F)
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