MESON Chess Problem Database

Problem Display
PID: 75427 (2K2b2/8/3B4/1N1R4/p1kq1N2/P2Rpn2/2n5/6Q1 w - - 0 1)

Dyachuk, Vasyl Vasilovich

4th HM., Probleemblad, 2003

2K2b2/8/3B4/1N1R4/p1kq1N2/P2Rpn2/2n5/6Q1

#2

8 + 7

102 Probleemblad 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Rc5#
    • 1...Qb2
      • 2.Rc5#
    • 1...Qc3
      • 2.Rxc3#
    • 1...Qc5+
      • 2.Rxc5#
    • 1...Qb6
      • 2.Rc3#
    • 1...Qf6
      • 2.Rc5#
    • 1...Qa7
      • 2.Rc3#
    • 1...Qg7
      • 2.Rc5#
    • 1...Qh8
      • 2.Rc5#
    • 1...Qe4
      • 2.Rc3#
      • 2.Rc5#
    • 1...Bxd6
      • 2.Sxd6#
    • 1...Sxa3
      • 2.Sxa3#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qa2#
      • 1...Qc5+
        • 2.Rxc5#
      • 1...Qxd3
        • 2.Rc5#
      • 1...Qxd5
        • 2.Rc3#
      • 1...Qa1
        • 2.Rc5#
      • 1...Qb2
        • 2.Rc5#
      • 1...Qc3
        • 2.Rxc3#
        • 2.Rc5#
      • 1...Sa1
        • 2.Qb4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sd2!
    • 1.Qf1?
      • threat
        • 2.Rc3#
      • 1...Qc5+
        • 2.Rxc5#
      • 1...Qxd3
        • 2.Qxd3#
      • 1...Qxf4
        • 2.Rc5#
      • 1...Qc3
        • 2.Rxc3#
      • 1...e2!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Rc5#
      • 1...Qc5+
        • 2.Rxc5#
      • 1...Qxf4
        • 2.Rc3#
      • 1...Qxd5
        • 2.Qxd5#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...Sxa3
        • 2.Sxa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(f);N_GUARD::R1(F)
    • Q(f);N_GUARD::R1(C),XQ(f)
    • Q(f);CHECK,N_GUARD::R1(F),XQ(f)
    • Q(f);N_GUARD::R1(C)
    • B(g);XB(G)::S(E),XB(g)
    • S(a);XP(B)::S(E),XS(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • Q(f);CHECK,N_GUARD::R1(F),XQ(f)
        • Q(f);N_GUARD,XR(C)::R1(F)
        • Q(f);N_GUARD,XR(F)::R1(C)
        • Q(f);N_GUARD::R1(F)
        • S(a);N_GUARD::QAR1(A)
        • S(a);N_GUARD::QAR1(A),XS(a)
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(C),DCHECK
      • Vars
        • Q(f);CHECK,N_GUARD::R1(F),XQ(f)
        • Q(f);OGATE,P_SPINQ(f),XR(C)::QAB1(A),XQ(f)
        • Q(f);N_GUARD,XS(D)::R1(F)
        • Q(f);::QAB(A)+R(C),DCHECK,XQ(f)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+R(F),DCHECK
    • Vars
      • Q(f);CHECK::QAB(A)+R(F),DCHECK,XQ(f)
      • Q(f);N_GUARD,XS(D)::R1(C)
      • Q(f);OGATE,P_SPINQ(f),XR(F)::QAB1(A),XQ(f)
      • B(g);XB(G)::S(E),XB(g)
      • S(a);XP(B)::S(E),XS(a)
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