MESON Chess Problem Database

Problem Display
PID: 217285 (r7/3N4/r6Q/1P1P4/2k5/1b1N4/2p1B3/5K2 w - - 0 1)

Farrow, GW

Land and Water, 1875

(First published on Sat Aug 14 1875)

r7/3N4/r6Q/1P1P4/2k5/1b1N4/2p1B3/5K2

#2

7 + 5

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qf4+?
      • 1...Kc3
        • 2.Qb4#
      • 1...Kxb5
        • 2.Qb4#
      • 1...Kxd5!
    • 1.Qh4+?
      • 1...Kc3
        • 2.Qb4#
      • 1...Kxb5
        • 2.Qb4#
      • 1...Kxd5!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Sc1#
        • 2.Se1#
        • 2.Sb2#
        • 2.Sf2#
        • 2.Sb4#
        • 2.Sf4#
        • 2.S3c5#
        • 2.S3e5#
      • 1...Ra1+
        • 2.Sc1#
        • 2.Se1#
      • 1...Rf6+
        • 2.Sf2#
        • 2.Sf4#
      • 1...Rf8+
        • 2.Sf2#
        • 2.Sf4#
      • 1...c1Q+
        • 2.Sxc1#
        • 2.Se1#
      • 1...c1R+
        • 2.Sxc1#
        • 2.Se1#
      • 1...Kd4
        • 2.Sf2#
        • 2.S3c5#
      • 1...Kxb5
        • 2.Qb4#
      • 1...Kxd5
        • 2.S3c5#
      • 1...Ba2
        • 2.Sc1#
        • 2.S3c5#
      • 1...Ba4
        • 2.Sc1#
        • 2.S3c5#
      • 1...c1S
        • 2.Sxc1#
        • 2.Sb2#
        • 2.S3e5#
      • 1...c1B
        • 2.Sxc1#
        • 2.Se1#
        • 2.Sb2#
        • 2.Sf2#
        • 2.Sb4#
        • 2.Sf4#
        • 2.S3c5#
        • 2.S3e5#
      • 1...Re6
        • 2.Sb2#
        • 2.S3e5#
      • 1...Re8
        • 2.Sb2#
        • 2.S3e5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAB1(F)
        • K(c);OGATE,S_FLIGHT,XP(D)::QAR1(F)
      • Refutation
        • K(c);S_FLIGHT,XP(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAB1(F)
        • K(c);OGATE,S_FLIGHT,XP(D)::QAR1(F)
      • Refutation
        • K(c);S_FLIGHT,XP(E)
  • Actual
    • Q(F);
    • Threat
      • DUALS(8)
    • Vars
      • K(c);S_FLIGHT,XP(D)::QAR1(F)
      • K(c);S_FLIGHT,XP(E)::QAR(F)+S(C)
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