MESON Chess Problem Database

Problem Display
PID: 165766 (k1b5/pp1N4/1R3Q2/8/8/4K3/8/8 w - - 0 1)

Kuzmichev, Vladimir Viktorovich

Problemskak, 2016

k1b5/pp1N4/1R3Q2/8/8/4K3/8/8

#2

4 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...axb6
      • 2.Qa1#
  • Tries
    • 1.Qf3?
      • 1...Bxd7
        • 2.Qxb7#
      • 1...a5
        • 2.Ra6#
      • 1...a6
        • 2.Rxa6#
      • 1...axb6!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxc8#
      • 1...Bxd7
        • 2.Qxb7#
      • 1...axb6
        • 2.Qa4#
      • 1...bxc6
        • 2.Rb8#
      • 1...a5
        • 2.Ra6#
      • 1...a6
        • 2.Rxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB,XR(B)::QAB(C)
  • Tries
    • Try
      • Q(C);P_PINP(b)
      • Vars
        • B(d);N_GUARD,XS(D)::QAB1(C),XP(b)
        • P(a);OGATEB::R(B)
        • P(a);OGATEB::R(B),XP(a)
      • Refutation
        • P(a);XR(B)
  • Actual
    • Q(C);P_PINP(b)
    • Threat
      • QAR2(C),XB(d)
    • Vars
      • B(d);N_GUARD,XS(D)::QAB1(C),XP(b)
      • P(a);OGATEB,XR(B)::QAR(C)
      • P(b);N_SPINP(b),OGATE,XQ(C)::R1(B)
      • P(a);OGATEB::R(B)
      • P(a);OGATEB::R(B),XP(a)
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