MESON Chess Problem Database

Problem Display
PID: 169268 (8/8/3Q4/R3N3/4B2k/7N/8/4K3 w - - 0 1)

Abramenko, Sergey Petrovich

2/3 Place, SuperProblem 190. TT, 2017

8/8/3Q4/R3N3/4B2k/7N/8/4K3

#2

6 + 1

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kf2?
      • threat
        • 2.Qh6#
      • 1...Kxh3
        • 2.Qh6#
      • 1...Kh5!
    • 1.Sf3+?
      • 1...Kg4
        • 2.Sf2#
      • 1...Kxh3!
    • 1.Sg6+?
      • 1...Kg4
        • 2.Sf2#
      • 1...Kxh3!
    • 1.Qe6?
      • threat
        • 2.Qg4#
      • 1...Kh5
        • 2.Sf3#
      • 1...Kg3!
    • 1.Qd7?
      • threat
        • 2.Qg4#
      • 1...Kh5
        • 2.Qh7#
      • 1...Kg3!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Sf3#
        • 2.Sg6#
      • 1...Kg3
        • 2.Sg6#
      • 1...Kg5
        • 2.Sf3#
      • 1...Kh5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAR2(F)
      • Vars
        • K(a);P-FLIGHT,XS(B)::QAR(F)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT::S(B)
      • Refutation
        • K(a);P-FLIGHT,XS(B)
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT::S(B)
      • Refutation
        • K(a);P-FLIGHT,XS(B)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(a);P-FLIGHT::R(D)+S(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(a);P-FLIGHT::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);S_FLIGHT::QAB(F)+S(E)
      • K(a);S_FLIGHT::R(D)+S(E),DCHECK
      • K(a);P-FLIGHT::R(D)+S(E)
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