MESON Chess Problem Database

Problem Display
PID: 44413 (8/4pnK1/bnP1k3/5p2/3p1P2/B2P1N2/1Q6/8 w - - 0 1)

Kunkel, EA

Maryland Chess Review, 1874

8/4pnK1/bnP1k3/5p2/3p1P2/B2P1N2/1Q6/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Sxd4#
  • Tries
    • 1.Sg5+?
      • 1...Kd5
        • 2.Qg2#
      • 1...Sxg5!
    • 1.Qe2+?
      • 1...Se5
        • 2.Qxe5#
      • 1...Kd5!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Sxd4#
      • 1...Kd5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(d);SBLOCK::S(D),XP(a)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB(A)
      • Refutation
        • S(g);XS(D)
    • Try
      • Q(A);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAR1(A),XS(g)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • S(D),XP(a)
    • Vars
      • K(e);S_FLIGHT::QAB(A)+S(D)
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