MESON Chess Problem Database

Problem Display
PID: 78202 (2R5/5Q2/1P6/1Nbp4/2k3p1/3N2K1/R7/8 w - - 0 1)

Zgerski, Gennadi Bronislavovich

Die Schwalbe, 2007

2R5/5Q2/1P6/1Nbp4/2k3p1/3N2K1/R7/8

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Qxd5#
  • Tries
    • 1.Rxc5+?
      • 1...Kb3
        • 2.Ra3#
        • 2.Qxd5#
      • 1...Kxd3!
    • 1.Qxd5+?
      • 1...Kxb5
        • 2.Qxc5#
      • 1...Kxd5!
    • 1.Qf2?
      • 1...Kb3
        • 2.Qc2#
      • 1...Kxd3
        • 2.Qe2#
      • 1...Kxb5
        • 2.Qxc5#
      • 1...d4!
  • Keys
    • 1.Qe6!
      • 1...Kb3
        • 2.Qxd5#
      • 1...Kxd3
        • 2.Qe2#
      • 1...Kxb5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINB(c),S_FLIGHT::QAB(F),XP(d)
  • Tries
    • Try
      • R(G);CHECK,XB(c)
      • Refutation
        • K(a);N_SPINP(d),S_FLIGHT,XS(B)
    • Try
      • Q(F);CHECK,XP(d)
      • Vars
        • K(a);S_FLIGHT,XS(D)::QAR1(F),XB(c)
      • Refutation
        • K(a);N_SPINB(c),S_FLIGHT,XQ(F)
    • Try
      • Q(F);N_PINP(d)
      • Vars
        • K(a);N_SPINB(c),S_FLIGHT::QAB1(F)
        • K(a);N_SPINB(c),OGATEB,S_FLIGHT,XS(B)::QAB1(F)
        • K(a);N_SPINB(c),S_FLIGHT,XS(D)::QAR1(F),XB(c)
      • Refutation
        • P(d);
  • Actual
    • Q(F);
    • Vars
      • K(a);N_SPINB(c),S_FLIGHT::QAB(F),XP(d)
      • K(a);N_SPINB(c),N_SPINP(d),OGATEB,S_FLIGHT,XS(B)::QAB1(F)
      • K(a);N_SPINB(c),N_SPINP(d),S_FLIGHT,XS(D)::R1(G),XB(c)
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