MESON Chess Problem Database

Problem Display
PID: 89945 (8/2K5/6N1/2k5/6r1/1Q6/2N2P2/8 w - - 0 1)

Markovtsy, Vassyl Yuriovich

Die Schwalbe, 1999

8/2K5/6N1/2k5/6r1/1Q6/2N2P2/8

#2

5 + 2

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se7?
      • threat
        • 2.Qd5#
      • 1...Rc4
        • 2.Qb6#
      • 1...Rg5
        • 2.Qb4#
      • 1...Rd4!
    • 1.Qc3+?
      • 1...Kd5
        • 2.Qc6#
      • 1...Rc4
        • 2.Qa5#
        • 2.Qe5#
      • 1...Kb5!
    • 1.Qb6+?
      • 1...Kd5
        • 2.Qc6#
      • 1...Kc4!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qb6#
      • 1...Kd4
        • 2.Qc4#
      • 1...Rxg6
        • 2.Qc4#
      • 1...Rb4
        • 2.Qd5#

Anticipated by 15522(1985)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(C)
      • Vars
        • R(a);SBLOCK::QAB1(C)
        • R(a);N_GUARD::QAB1(C)
      • Refutation
        • R(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(A);
    • Threat
      • QAB1(C)
    • Vars
      • K(b);S_FLIGHT::QAR1(C)
      • R(a);N_GUARD,XS(D)::QAR1(C)
      • R(a);SBLOCK::QAR1(C)
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