MESON Chess Problem Database

Problem Display
PID: 60700 (2RK4/6B1/3pp3/1BNk3N/r2r1n2/3P4/3Q4/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

5th Prize, Odessa, 2000

2RK4/6B1/3pp3/1BNk3N/r2r1n2/3P4/3Q4/8

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rac4
      • 2.dxc4#
    • 1...Rdc4
      • 2.dxc4#
    • 1...Re4
      • 2.dxe4#
    • 1...e5
      • 2.Sf6#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Bc6#
      • 1...dxc5
        • 2.Qxc5#
      • 1...Ra6
        • 2.Qxd4#
      • 1...Rdc4
        • 2.Sf6#
      • 1...Rac4!
    • 1.Qa2+?
      • 1...Rac4
        • 2.Qa8#
      • 1...Rdc4
        • 2.Sxf4#
      • 1...Rxa2!
    • 1.Qg2+?
      • 1...Re4
        • 2.Sxf4#
      • 1...Sxg2!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Sf6#
      • 1...Sxh5
        • 2.Qxe6#
      • 1...dxc5
        • 2.Qe5#
      • 1...Re4
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(a);OGATE::P(B),XR(a)
    • R(b);OGATE::QAR(A)+P(B)DCHECK,XR(b)
    • P(f);SBLOCK::S(E)
  • Tries
    • Try
      • Q(A);
      • Threat
        • B(C)
      • Vars
        • P(e);OGATE,XS(D)::QAR1(A),XP(e)
        • R(a);N_GUARD::QAR1(A),XR(b)
        • R(b);::S(E)
      • Refutation
        • R(a);
    • Try
      • Q(A);CHECK
      • Vars
        • R(a);OGATE,P_SPINR(a)::QAB(A)
        • R(b);P_SPINR(b)::S(E),XS(c)
      • Refutation
        • R(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • R(b);P_SPINR(b)::S(E),XS(c)
      • Refutation
        • S(c);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • S(E)
    • Vars
      • S(c);N_GUARD,XS(E)::QAB1(A),XP(f)
      • P(e);N_GUARD,XS(D)::QAR1(A)
      • R(b);::B(C)
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