MESON Chess Problem Database

Problem Display
PID: 252858 (8/2b5/8/8/5pKB/3Q4/1pNpN3/1r1k4 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Problemas, 2021

8/2b5/8/8/5pKB/3Q4/1pNpN3/1r1k4

#2

5 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Sc3#
    • 1...f3
      • 2.Se3#
  • Tries
    • 1.Scd4?
      • threat
        • 2.Qxb1#
        • 2.Qc2#
        • 2.Qb3#
      • 1...Ra1
        • 2.Qc2#
        • 2.Qb3#
      • 1...Rc1!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Scd4#
      • 1...Kxe2
        • 2.Qf3#
      • 1...Rc1
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK::S(B)
    • P(e);N_GUARD::S(A)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(3)
      • Refutation
        • R(a);
  • Actual
    • Q(C);N_PINP(d)
    • Threat
      • QAB(C)+S(A)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(B)::QAB1(C)
      • R(a);SBLOCK::S(B)
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