MESON Chess Problem Database

Problem Display
PID: 213691 (8/8/8/2n5/3N4/p6p/2Q5/k6K w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1973

8/8/8/2n5/3N4/p6p/2Q5/k6K

#2

3 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Sxb3#
    • 1...Sd3
      • 2.Sb3#
    • 1...Sa4
      • 2.Sb3#
    • 1...Se4
      • 2.Sb3#
    • 1...Sa6
      • 2.Sb3#
    • 1...Se6
      • 2.Sb3#
    • 1...Sb7
      • 2.Sb3#
    • 1...Sd7
      • 2.Sb3#
    • 1...a2
      • 2.Qc1#
  • Tries
    • 1.Kg1?
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sd3
        • 2.Sb3#
      • 1...Sa4
        • 2.Sb3#
      • 1...Se4
        • 2.Sb3#
      • 1...Sa6
        • 2.Sb3#
      • 1...Se6
        • 2.Sb3#
      • 1...Sb7
        • 2.Sb3#
      • 1...Sd7
        • 2.Sb3#
      • 1...a2
        • 2.Qc1#
      • 1...h2+!
  • Keys
    • 1.Kh2!
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sd3
        • 2.Sb3#
      • 1...Sa4
        • 2.Sb3#
      • 1...Se4
        • 2.Sb3#
      • 1...Sa6
        • 2.Sb3#
      • 1...Se6
        • 2.Sb3#
      • 1...Sb7
        • 2.Sb3#
      • 1...Sd7
        • 2.Sb3#
      • 1...a2
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD::S(C),XS(d)
    • S(d);N_GUARD::S(C)
    • P(b);SBLOCK::QAR2(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(d);N_GUARD::S(C),XS(d)
        • S(d);N_GUARD::S(C)
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • P(c);CHECK
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • S(d);N_GUARD::S(C),XS(d)
      • S(d);N_GUARD::S(C)
      • P(b);SBLOCK::QAR2(B)
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