MESON Chess Problem Database

Problem Display
PID: 267423 (8/8/7n/2K1N3/7N/8/4kp2/2Q5 w - - 0 1)

Kovalenko, V?

Zadachi i Etyudi, 2013

8/8/7n/2K1N3/7N/8/4kp2/2Q5

#2

4 + 3

5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Shf3?
      • threat
        • 2.Sd4#
      • 1...f1Q
        • 2.Qd2#
      • 1...f1S
        • 2.Qe1#
      • 1...f1B
        • 2.Qd2#
        • 2.Qe1#
      • 1...f1R
        • 2.Qd2#
      • 1...Sf5!
    • 1.Qd2+?
      • 1...Kf1
        • 2.Qd1#
      • 1...Kxd2!
    • 1.Qc2+?
      • 1...Kf1
        • 2.Qd1#
      • 1...Ke3
        • 2.Sg2#
      • 1...Ke1!
  • Keys
    • 1.Sg2!
      • threat
        • 2.Sf4#
      • 1...f1Q
        • 2.Qc2#
      • 1...f1S
        • 2.Qe1#
      • 1...f1B
        • 2.Qe1#
        • 2.Qc2#
      • 1...f1R
        • 2.Qc2#

Anticipated by 54367(2003)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • P(b);SBLOCK::QAR1(A)
        • P(b);N_GUARD::QAR1(A)
      • Refutation
        • S(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(A)
        • K(a);N_GUARD,P-FLIGHT::S(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • P(b);SBLOCK::QAR2(A)
      • P(b);N_GUARD::QAR1(A)
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