MESON Chess Problem Database

Problem Display
PID: 232917 (8/8/3Q4/3R4/2pPk3/8/8/2KN4 w - - 0 1)

Evdokimov, Aleksey

Kudesnik, 2009

8/8/3Q4/3R4/2pPk3/8/8/2KN4

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3+?
      • 1...Kd3
        • 2.Qg3#
      • 1...Ke3
        • 2.Qg3#
      • 1...Kf3!
    • 1.Qg3?
      • threat
        • 2.Sc3#
      • 1...c3
        • 2.Sxc3#
      • 1...Kxd5!
    • 1.Qe5+?
      • 1...Kd3
        • 2.Qe3#
      • 1...Kf3!
    • 1.Qf8?
      • threat
        • 2.Qf5#
      • 1...Kd3
        • 2.Qf3#
      • 1...Kxd5!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qf5#
      • 1...Kd3
        • 2.Qf3#
      • 1...Kxd5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR(E)
        • K(b);P-FLIGHT::QAR2(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • S(B)
      • Vars
        • P(a);::S(B),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(b);S_FLIGHT::QAR2(E)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(b);S_FLIGHT::QAR2(E)
      • K(b);S_FLIGHT,XR(D)::S(B)
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