MESON Chess Problem Database

Problem Display
PID: 75048 (4R3/8/3p4/N1Pk3K/1B6/3r1P2/5Q1n/b7 w - - 0 1)

Dyachuk, Vasyl Vasilovich

3rd Prize, Melnichenko-60 JT, 1999

4R3/8/3p4/N1Pk3K/1B6/3r1P2/5Q1n/b7

#2

7 + 5

6166 FIDE Album (1998-2000) 2007

SOLUTION

  • SOUND
  • Sets
    • 1...dxc5
      • 2.Qxc5#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...dxc5
        • 2.Rd8#
      • 1...Rd4
        • 2.Qe6#
      • 1...Re3!
    • 1.Qe3?
      • threat
        • 2.Qe4#
      • 1...dxc5
        • 2.Rd8#
        • 2.Qxc5#
      • 1...Rd4
        • 2.Qg5#
        • 2.Qe6#
      • 1...Rxe3!
    • 1.Qh4?
      • threat
        • 2.Qc4#
        • 2.Qe4#
      • 1...dxc5
        • 2.Qd8#
      • 1...Rc3
        • 2.Qe4#
      • 1...Re3
        • 2.Qc4#
      • 1...Rd4
        • 2.Qg5#
      • 1...Bd4
        • 2.Qe4#
      • 1...Sg4!
    • 1.Qa2+?
      • 1...Kd4
        • 2.Sc6#
        • 2.Re4#
        • 2.Qc4#
      • 1...Rb3!
    • 1.Qc2?
      • threat
        • 2.Qc4#
      • 1...Kd4
        • 2.Qc4#
      • 1...dxc5
        • 2.Qxc5#
      • 1...Rc3
        • 2.Qe4#
      • 1...Rd4
        • 2.Qf5#
      • 1...Bc3!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...dxc5
        • 2.Rd8#
      • 1...Re3
        • 2.Qc4#
      • 1...Rd4
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(e);OGATE,XP(E)::QAR1(A),XP(e)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
        • P(e);OGATEB,XP(E)::R(G)
        • R(c);SBLOCK::QAB1(A)
      • Refutation
        • R(c);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • R(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);OGATEB,XP(E)::QAR(A)
        • R(c);::QAB1(A)
        • R(c);SBLOCK,S_CUTB(a)::QAR(A)
        • B(a);::QAB1(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);CHECK
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
        • P(e);OGATE,XP(E)::QAR1(A),XP(e)
        • R(c);OGATE::QAB1(A)
        • R(c);OGATE,SBLOCK::QAR2(A)
      • Refutation
        • B(a);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(d);P-FLIGHT::QAR1(A)
      • P(e);OGATEB,XP(E)::R(G)
      • R(c);OGATE::QAB1(A)
      • R(c);SBLOCK::QAB1(A)
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