MESON Chess Problem Database

Problem Display
PID: 233017 (2K5/8/5N2/2p5/3k4/1Q6/5R2/2r5 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Kudesnik, 2009

2K5/8/5N2/2p5/3k4/1Q6/5R2/2r5

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qd5#
  • Tries
    • 1.Re2?
      • threat
        • 2.Re4#
      • 1...Rc3
        • 2.Qd5#
      • 1...c4
        • 2.Qe3#
      • 1...Re1!
    • 1.Qd5+?
      • 1...Ke3
        • 2.Sg4#
        • 2.Qd2#
      • 1...Kc3!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Kxd3!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...c4
        • 2.Qe3#
      • 1...Rc4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR1(B)
  • Tries
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • R(a);SBLOCK::QAR1(B)
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • R(a);
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
  • Actual
    • R(A);
    • Threat
      • QAR1(B)
    • Vars
      • K(b);S_FLIGHT::QAR1(B)
      • P(c);SBLOCK::QAB1(B)
      • R(a);SBLOCK::QAB1(B)
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