MESON Chess Problem Database

Problem Display
PID: 34823 (6b1/1Nb5/Q7/P2k1P2/PpN5/4B3/3K4/8 w - - 0 1)

Carpenter, George Edward

Maryland Chess Review, 1874

6b1/1Nb5/Q7/P2k1P2/PpN5/4B3/3K4/8

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Qxe6#
    • 1...Bh7
      • 2.Qe6#
  • Tries
    • 1.Kd3?
      • threat
        • 2.Qb5#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Bb6!
    • 1.Sbd6?
      • threat
        • 2.Qb5#
        • 2.Qb7#
        • 2.Qa8#
      • 1...Bb6
        • 2.Qb7#
        • 2.Qa8#
      • 1...Bxd6!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Sbd6#
      • 1...Kxc4
        • 2.Qxg8#
      • 1...Ke4
        • 2.Sbd6#
      • 1...Kc6
        • 2.Sc5#
      • 1...Bd6
        • 2.Sbxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(d);N_GUARD::QAB1(G),XB(d)
    • B(d);N_GUARD::QAB1(G)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • QAR2(G)
      • Vars
        • B(c);N_GUARD::QAR1(G),XB(c)
      • Refutation
        • B(c);
    • Try
      • S(H);
      • Threat
        • DUALS(3)
      • Refutation
        • B(c);XS(H)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)+S(H)
    • Vars
      • K(b);S_FLIGHT,XS(D)::QAB(G),XB(d)
      • K(b);S_FLIGHT::QAB(G)+S(H),DCHECK
      • K(b);S_FLIGHT::QAB(G)+S(H)
      • B(c);::QAB(G)+S(H),XB(c)
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