MESON Chess Problem Database

Problem Display
PID: 142102 (R1n5/nB2N3/8/1kp5/1pN5/5p2/1K3P2/3Q4 w - - 0 1)

Campbell, AWD

British Chess Magazine 06. Ty., 1890

R1n5/nB2N3/8/1kp5/1pN5/5p2/1K3P2/3Q4

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Ba6#
    • 1...b3
      • 2.Qxb3#
  • Tries
    • 1.Sxc8?
      • threat
        • 2.S8d6#
      • 1...Kxc4
        • 2.Sd6#
      • 1...b3
        • 2.Qxb3#
      • 1...Sxc8!
    • 1.Bc6+?
      • 1...Kxc4
        • 2.Qd5#
      • 1...Ka6
        • 2.Qa4#
        • 2.Qa1#
      • 1...Sxc6!
    • 1.Qa4+?
      • 1...Kxa4
        • 2.Bc6#
      • 1...Kxc4!
  • Keys
    • 1.Sf5!
      • 1...Kxc4
        • 2.Qf1#
      • 1...b3
        • 2.Qxb3#
      • 1...Sb6
        • 2.Sfd6#
      • 1...Sc6
        • 2.Ba6#
      • 1...Sd6
        • 2.Sfxd6#
      • 1...Se7
        • 2.Sfd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(e);::B(E)
    • P(b);OGATEB::QAR2(A),XP(b)
  • Tries
    • Try
      • S(F);XS(f)
      • Threat
        • S(F)
      • Vars
        • K(c);S_FLIGHT,XS(D)::S(F)
        • P(b);OGATEB::QAR2(A),XP(b)
      • Refutation
        • S(e);XS(F)
    • Try
      • B(E);CHECK
      • Vars
        • K(c);S_FLIGHT,XS(D)::QAB1(A)
      • Refutation
        • S(e);XB(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P_SPINS(e),S_FLIGHT,XQ(A)::B(E)
      • Refutation
        • K(c);P_SPINP(b),S_FLIGHT,XS(D)
  • Actual
    • S(F);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(D)::QAB(A)
      • P(b);OGATEB::QAR2(A),XP(b)
      • S(f);N_GUARD::S(F)
      • S(e);SBLOCK::B(E)
      • S(f);N_GUARD::S(F),XS(f)
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