MESON Chess Problem Database

Problem Display
PID: 158069 (B7/2Qb4/1p1rp3/2nn4/p1p1kpP1/5N2/4K3/2N5 w - - 0 1)

Lukashev, Viktor Sergeevich

Best Problems, 2009

B7/2Qb4/1p1rp3/2nn4/p1p1kpP1/5N2/4K3/2N5

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Qe5#
    • 1...Bb5
      • 2.Qh7#
    • 1...Bc6
      • 2.Qh7#
    • 1...Bc8
      • 2.Qh7#
    • 1...Sd3
      • 2.Qxc4#
    • 1...Sa6
      • 2.Qxc4#
    • 1...Sb7
      • 2.Qxc4#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sf2#
      • 1...Sxd3
        • 2.Qxc4#
      • 1...cxd3+!
    • 1.Qxd6?
      • threat
        • 2.Qe5#
      • 1...e5
        • 2.Bxd5#
        • 2.Qxe5#
        • 2.Qxd5#
      • 1...Sd3!
    • 1.Qxc5?
      • threat
        • 2.Qd4#
        • 2.Qxc4#
      • 1...Rc6
        • 2.Qd4#
      • 1...Bb5
        • 2.Qd4#
      • 1...c3
        • 2.Qb4#
        • 2.Qd4#
        • 2.Qc4#
      • 1...b5
        • 2.Qd4#
      • 1...e5
        • 2.Sd2#
        • 2.Sg5#
        • 2.Qxc4#
      • 1...bxc5!
  • Keys
    • 1.Sa2!
      • threat
        • 2.Sc3#
      • 1...Rc6
        • 2.Qe5#
      • 1...Bc6
        • 2.Qh7#
      • 1...Sb7
        • 2.Qxc4#
      • 1...c3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(h);N_SPINS(f),OGATE::QAR1(E)
    • B(j);OGATE::QAB(E)
    • B(j);N_SPINS(f),OGATE::QAB(E)
    • S(e);OGATE::QAR2(E),XP(b)
    • S(e);N_SPINS(f),OGATE::QAR2(E),XP(b)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • S(e);OGATE,XS(A)::QAR2(E),XP(b)
      • Refutation
        • P(b);CHECK,XS(A)
    • Try
      • Q(E);XR(h)
      • Threat
        • QAR1(E)
      • Refutation
        • S(e);
    • Try
      • Q(E);XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • R(h);N_SPINS(f)::QAR1(E)
        • B(j);::QAR1(E)
        • P(g);::QAR1(E)
      • Refutation
        • P(g);XQ(E)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • R(h);N_SPINS(f),OGATE::QAR1(E)
      • B(j);N_SPINS(f),OGATE::QAB(E)
      • S(e);N_SPINS(f),OGATE::QAR2(E),XP(b)
      • P(b);::S(A),XP(b)
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