MESON Chess Problem Database

Problem Display
PID: 159429 (8/B7/8/8/8/2Q4p/4P2r/2K2k2 w - - 0 1)

Aberman, Victor

Kirichenko-60 JT, 2015

8/B7/8/8/8/2Q4p/4P2r/2K2k2

#2

4 + 3

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kg2
      • 2.Qf3#
  • Tries
    • 1.Qe1+?
      • 1...Kg2
        • 2.Qg1#
      • 1...Kxe1!
    • 1.Qf3+?
      • 1...Rf2
        • 2.Qxf2#
      • 1...Ke1!
  • Keys
    • 1.Qd4!
      • 1...Ke1
        • 2.Qd1#
      • 1...Kxe2
        • 2.Qd1#
      • 1...Kg2
        • 2.Qg1#
      • 1...Rxe2
        • 2.Qg1#
      • 1...Rf2
        • 2.Qxf2#
      • 1...Rh1
        • 2.Qf2#
      • 1...Rg2
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR1(C),XR(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);S_FLIGHT,XP(B)::QAB1(C)
      • K(a);S_FLIGHT::QAR1(C)
      • R(b);SBLOCK,XP(B)::QAR1(C)
      • R(b);N_GUARD::QAR1(C),XR(b)
      • R(b);N_GUARD::QAR1(C)
      • R(b);SBLOCK::QAR2(C)
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