MESON Chess Problem Database

Problem Display
PID: 51531 (5NN1/1B1Q1p2/4qP2/pRK2kp1/6p1/5nB1/8/1b3R2 w - - 0 1)

Morse, Christopher Jeremy

The Guardian, 1963

5NN1/1B1Q1p2/4qP2/pRK2kp1/6p1/5nB1/8/1b3R2

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...a4
      • 2.Kb4#
  • Tries
    • 1.Qd3+?
      • 1...Qe4
        • 2.Kb6#
        • 2.Kd6#
        • 2.Bxe4#
        • 2.Bc8#
      • 1...Bxd3!
    • 1.Qd5+?
      • 1...Qe5
        • 2.Bc8#
        • 2.Qxe5#
      • 1...Qxd5+!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Sh6#
      • 1...Qc4+
        • 2.Kxc4#
      • 1...Qd5+
        • 2.Qxd5#
      • 1...Qc8+
        • 2.Bxc8#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Qb6+
        • 2.Kxb6#
      • 1...Qc6+
        • 2.Kxc6#
      • 1...Qd6+
        • 2.Kxd6#
      • 1...Qe7+
        • 2.Sxe7#
      • 1...Qxf6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • P(d);::R(C)+K(D)
  • Tries
    • Try
      • Q(G);CHECK,N_PINQ(g)
      • Refutation
        • B(a);XQ(G)
    • Try
      • Q(G);CHECK,N_PINQ(g)
      • Refutation
        • Q(g);CHECK,XQ(G)
  • Actual
    • Q(G);N_PINQ(g)
    • Threat
      • S(I)
    • Vars
      • Q(g);CHECK::R(C)+K(D),XQ(g)
      • Q(g);CHECK,N_GUARD::QAR2(G),XQ(g)
      • Q(g);CHECK,OGATEB::B(F),XQ(g)
      • Q(g);CHECK,N_GUARD::QAR1(G),XQ(g)
      • Q(g);CHECK,N_GUARD::S(I),XQ(g)
      • Q(g);OGATE,XP(E)::QAR1(G),XQ(g)
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