MESON Chess Problem Database

Problem Display
PID: 268183 (2N5/1Kn1RP1B/2P2p2/1p1kn3/1p1P4/2p5/P1N5/5Q1b w - - 0 1)

Svetilsky, Anatoly Volodimirovich

Probleemblad, 1985

2N5/1Kn1RP1B/2P2p2/1p1kn3/1p1P4/2p5/P1N5/5Q1b

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Be4#
    • 1...Sc4
      • 2.Qxh1#
    • 1...Sa8
      • 2.Qxb5#
    • 1...Se8
      • 2.Qxb5#
    • 1...f5
      • 2.Rxe5#
  • Tries
    • 1.Kxc7?
      • threat
        • 2.Sb6#
        • 2.Qxb5#
      • 1...Sd3
        • 2.Sb6#
      • 1...f5
        • 2.Rxe5#
      • 1...Sc4
        • 2.Qxh1#
      • 1...Sd7!
    • 1.Rd7+?
      • 1...Ke6
        • 2.Bf5#
        • 2.Qf5#
        • 2.f8S#
      • 1...Sxd7!
    • 1.Qd3?
      • threat
        • 2.Se3#
        • 2.Sxb4#
      • 1...Sxc6
        • 2.Se3#
      • 1...Sc4
        • 2.Sxb4#
      • 1...Sg4
        • 2.Sxb4#
      • 1...Sa6
        • 2.Se3#
      • 1...b3
        • 2.Se3#
        • 2.Sb4#
      • 1...Sxd3!
    • 1.Qxh1+?
      • 1...Kc4
        • 2.Sb6#
        • 2.Sd6#
      • 1...Sf3!
    • 1.Qf4?
      • threat
        • 2.Se3#
      • 1...Kc4
        • 2.Se3#
        • 2.Sb6#
      • 1...Sc4
        • 2.Sxb4#
      • 1...Sg4
        • 2.Sb6#
      • 1...Be4!
  • Keys
    • 1.Qxf6!
      • threat
        • 2.Sb6#
      • 1...Kc4
        • 2.Sb6#
      • 1...Sc4
        • 2.Sxb4#
      • 1...Sd7
        • 2.Se3#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sa8
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(f);S_CUTB(a)::B(I)
    • S(f);N_GUARD,SBLOCK::QAB(A),XB(a)
    • S(h);N_GUARD::QAR2(A),XP(d)
    • P(g);N_GUARD::R1(G),XS(f)
  • Tries
    • Try
      • K(F);P-FLIGHT,XS(h)
      • Threat
        • DUALS(2)
      • Vars
        • S(f);::S(J)
        • P(g);N_GUARD::R1(G),XS(f)
        • S(f);N_GUARD,SBLOCK::QAB(A),XB(a)
      • Refutation
        • S(f);
    • Try
      • R(G);CHECK
      • Refutation
        • S(f);XR(G)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);XP(E)::S(C)
        • S(f);::S(C),XP(c)
        • S(h);::S(C)
      • Refutation
        • S(f);XQ(A)
    • Try
      • Q(A);CHECK,XB(a)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • Q(A);
      • Threat
        • S(C)
      • Vars
        • S(f);SBLOCK::S(C),XP(c)
        • S(f);::S(J)
      • Refutation
        • B(a);
  • Actual
    • Q(A);XP(g)
    • Threat
      • S(J)
    • Vars
      • K(e);P_PINP(E),S_FLIGHT::S(J)
      • S(f);SBLOCK::S(C),XP(c)
      • S(f);::S(C)
      • S(h);N_GUARD::QAB1(A),XS(h)
      • S(h);N_GUARD::QAB1(A)
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