MESON Chess Problem Database

Problem Display
PID: 240470 (8/8/8/5p2/3R4/3P1Qp1/5N2/3K1kb1 w - - 0 1)

Parkhomenko, Nikolai A

Problemist Ukraini, 2012

8/8/8/5p2/3R4/3P1Qp1/5N2/3K1kb1

#2

5 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Sh3#
    • 1...gxf2
      • 2.Qh3#
    • 1...g2
      • 2.Qe2#
  • Tries
    • 1.Rh4?
      • 1...Bxf2
        • 2.Rh1#
      • 1...gxf2
        • 2.Qh3#
      • 1...Bh2
        • 2.Sh3#
      • 1...g2
        • 2.Qe2#
      • 1...f4!
  • Keys
    • 1.Rf4!
      • 1...Bxf2
        • 2.Qh1#
      • 1...gxf2
        • 2.Qh3#
      • 1...Bh2
        • 2.Sh3#
      • 1...g2
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::QAR(D)+S(B)
    • P(c);OGATE,P_SPINP(c),SBLOCK,XS(B)::QAB(D)
    • P(c);SBLOCK::QAB1(D)
  • Tries
    • Try
      • R(E);
      • Vars
        • B(b);OGATEB,P_SPINB(b),XS(B)::R(E)
        • P(c);OGATE,P_SPINP(c),SBLOCK,XS(B)::QAB(D)
        • B(b);N_GUARD::QAR(D)+S(B)
        • P(c);SBLOCK::QAB1(D)
      • Refutation
        • P(d);
  • Actual
    • R(E);
    • Vars
      • B(b);OGATEB,P_SPINB(b),XS(B)::QAR2(D)
      • P(c);OGATE,P_SPINP(c),XS(B)::QAB(D)
      • B(b);N_GUARD::QAR(D)+S(B)
      • P(c);SBLOCK::QAB1(D)
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