MESON Chess Problem Database

Problem Display
PID: 158157 (8/8/KP4Q1/6P1/4NN2/3p1k1B/p2B4/q7 w - - 0 1)

Elkhan, Alexander A

British Chess Magazine 13. Ty., 1906-1907

8/8/KP4Q1/6P1/4NN2/3p1k1B/p2B4/q7

#2

8 + 4

5454 Near Snap 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Qf5?
      • threat
        • 2.Bg2#
        • 2.Bg4#
      • 1...Qf1
        • 2.Bg4#
      • 1...Qh1
        • 2.Bg4#
      • 1...Qg1!
    • 1.Qe6?
      • threat
        • 2.Bg2#
        • 2.Bg4#
      • 1...Qe5
        • 2.Bg2#
      • 1...Qf1
        • 2.Bg4#
      • 1...Qh1
        • 2.Bg4#
      • 1...Qg1!
  • Keys
    • 1.Se2!
      • 1...Kxe2
        • 2.Qh5#
      • 1...dxe2
        • 2.Qf5#
      • 1...Qb2
        • 2.Sg1#
      • 1...Qc3
        • 2.Sg1#
      • 1...Qd4
        • 2.Sxd4#
      • 1...Qe5
        • 2.Sg1#
      • 1...Qf6
        • 2.Sg1#
      • 1...Qg7
        • 2.Sg1#
      • 1...Qh8
        • 2.Sg1#
      • 1...Qb1
        • 2.Sd4#
      • 1...Qc1
        • 2.Sd4#
      • 1...Qd1
        • 2.Sd4#
      • 1...Qe1
        • 2.Sd4#
      • 1...Qf1
        • 2.Sd4#
      • 1...Qg1
        • 2.Sxg1#
      • 1...Qh1
        • 2.Sd4#

This anticipates 96812(0000)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 16
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::B(B)
      • Refutation
        • Q(a);
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::B(B)
      • Refutation
        • Q(a);
  • Actual
    • S(D);
    • Vars
      • K(d);S_FLIGHT,XS(D)::QAB(H)
      • P(c);SBLOCK,XS(D)::QAR2(H)
      • Q(a);N_GUARD::S(D)
      • Q(a);N_GUARD::S(D),XQ(a)
      • Q(a);N_GUARD,P_PINP(G)::S(D)
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