MESON Chess Problem Database

Problem Display
PID: 143640 (8/8/4n3/2PN4/1P2kp1R/2Rp1N2/6Q1/7K w - - 0 1)

Colville, Robert A

British Chess Magazine, 1896

8/8/4n3/2PN4/1P2kp1R/2Rp1N2/6Q1/7K

#2

8 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Kf5!
    • 1.Sg5+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Kf5!
    • 1.Qg5?
      • 1...Kxf3
        • 2.Qg2#
      • 1...Sxc5
        • 2.Rxf4#
      • 1...Sd4
        • 2.Sd2#
        • 2.Rxf4#
      • 1...Sc7
        • 2.Rxf4#
      • 1...Sg7
        • 2.Rxf4#
      • 1...Sd8
        • 2.Rxf4#
      • 1...Sf8
        • 2.Rxf4#
      • 1...d2
        • 2.Sf6#
        • 2.Re3#
        • 2.Qe5#
      • 1...Sxg5!
    • 1.Qg6+?
      • 1...Kxf3
        • 2.Qg2#
      • 1...Kxd5!
  • Keys
    • 1.Qg8!
      • 1...Kxf3
        • 2.Qg2#
      • 1...Kxd5
        • 2.Qa8#
      • 1...Kf5
        • 2.Qh7#
      • 1...Sxc5
        • 2.Rxf4#
      • 1...Sd4
        • 2.Rxf4#
      • 1...Sg5
        • 2.Rxf4#
      • 1...Sc7
        • 2.Rxf4#
      • 1...Sg7
        • 2.Rxf4#
      • 1...Sd8
        • 2.Rxf4#
      • 1...Sf8
        • 2.Rxf4#
      • 1...d2
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • K(b);N_SPINP(c),P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • K(b);N_SPINP(c),P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);N_SPINP(c),OGATEB,P_SPINP(a),S_FLIGHT,XS(D)::QAB1(B)
        • S(d);N_GUARD,XP(G)::R1(F),XP(c)
        • S(d);N_GUARD::R1(F),XP(c)
      • Refutation
        • S(d);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);N_SPINP(c),OGATEB,P_SPINP(a),S_FLIGHT,XS(D)::QAB1(B)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT,XS(H)
  • Actual
    • Q(B);
    • Vars
      • K(b);N_SPINP(c),OGATEB,P_SPINP(a),S_FLIGHT,XS(D)::QAB1(B)
      • K(b);N_SPINP(c),OGATEB,P_SPINS(d),S_FLIGHT,XS(H)::QAB(B)
      • K(b);N_SPINP(c),S_FLIGHT::QAB(B)
      • S(d);N_GUARD,XP(G)::R1(F),XP(c)
      • S(d);N_GUARD::R1(F),XP(c)
      • P(a);::QAR2(B),XS(d)
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