MESON Chess Problem Database

Problem Display
PID: 117318 (8/b6p/4p3/4P2Q/NR1pk3/4Np1P/5K2/8 w - - 0 1)

Laws, Benjamin Glover

Ottawa Citizen, 1888

8/b6p/4p3/4P2Q/NR1pk3/4Np1P/5K2/8

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc5+?
      • 1...Kf4
        • 2.Rxd4#
      • 1...Bxc5!
    • 1.Qxf3+?
      • 1...Kxe5
        • 2.Sc4#
      • 1...Kd3!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qxf3#
      • 1...d3+
        • 2.Scb6#
      • 1...Kd3
        • 2.Qxh7#
      • 1...Kf4
        • 2.Qg4#
      • 1...Kd5
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);P-FLIGHT::R(E),XP(b)
      • Refutation
        • B(e);XS(D)
    • Try
      • Q(G);CHECK,XP(a)
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT,XP(F)::S(B)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
  • Actual
    • S(B);N_PINP(b)
    • Threat
      • QAB1(G),XP(a)
    • Vars
      • P(b);CHECK,SBLOCK::R(E)+S(B)
      • K(c);S_FLIGHT::QAB(G),XP(f)
      • K(c);P-FLIGHT::QAR1(G)
      • K(c);S_FLIGHT::QAB(G),XP(a)
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