MESON Chess Problem Database

Problem Display
PID: 89948 (K2k4/1p1r2N1/1N6/4Q3/8/8/8/8 w - - 0 1)

Markovtsy, Vassyl Yuriovich

Die Schwalbe, 1997

K2k4/1p1r2N1/1N6/4Q3/8/8/8/8

#2

4 + 3

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qxd6#
    • 1...Rc7
      • 2.Qe8#
    • 1...Re7
      • 2.Qb8#
  • Tries
    • 1.Qf6+?
      • 1...Kc7
        • 2.Se8#
      • 1...Re7!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qb8#
      • 1...Rd6
        • 2.Qe7#
      • 1...Rc7
        • 2.Qh8#

This anticipates 254386(2005)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATEB::QAR2(A),XR(b)
    • R(b);SBLOCK::QAR1(A)
    • R(b);SBLOCK::QAR2(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::S(C)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • S(C);
    • Threat
      • QAR2(A)
    • Vars
      • R(b);N_GUARD::QAB1(A)
      • R(b);SBLOCK::QAR(A)
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