MESON Chess Problem Database

Problem Display
PID: 165700 (2K5/4N3/1p5p/1Q1p3r/1P2kP2/2P2nP1/2PP1n2/4r2B w - - 0 1)

Stojnic, Dragan

Zamanov, Vidadi

Die Schwalbe, 2016

2K5/4N3/1p5p/1Q1p3r/1P2kP2/2P2nP1/2PP1n2/4r2B

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qe2#
    • 1...Rb1
      • 2.Qe2#
    • 1...Rc1
      • 2.Qe2#
    • 1...Rd1
      • 2.Qe2#
    • 1...Rf1
      • 2.Qe2#
    • 1...Rg1
      • 2.Qe2#
    • 1...Rexh1
      • 2.Qe2#
    • 1...Re2
      • 2.Qxe2#
    • 1...Rhxh1
      • 2.Qxd5#
    • 1...Rh2
      • 2.Qxd5#
    • 1...Rh3
      • 2.Qxd5#
    • 1...Rh4
      • 2.Qxd5#
    • 1...Sd1
      • 2.Qd3#
    • 1...Sxh1
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
      • 2.cxd3#
    • 1...Sh3
      • 2.Qd3#
    • 1...Sg4
      • 2.Qd3#
  • Tries
    • 1.Qc4+?
      • 1...d4
        • 2.Qxd4#
      • 1...dxc4!
    • 1.Qc5?
      • threat
        • 2.Qd4#
      • 1...Rexh1
        • 2.Qe3#
      • 1...Rhxh1
        • 2.Qxd5#
      • 1...Sxh1
        • 2.d3#
      • 1...d4
        • 2.Qxd4#
      • 1...bxc5!
    • 1.d3+?
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Ke3!
  • Keys
    • 1.Qxb6!
      • threat
        • 2.Qd4#
      • 1...Rexh1
        • 2.Qe3#
      • 1...Rhxh1
        • 2.Qg6#
      • 1...Sxh1
        • 2.d3#
      • 1...d4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 13
  • Sets
    • R(a);N_GUARD::QAR2(H)
    • R(a);N_GUARD,N_SPINS(c),XB(A)::QAR2(H)
    • R(a);N_GUARD::QAR2(H),XR(a)
    • R(f);N_GUARD,N_SPINS(c),XB(A)::QAB1(H),XP(e)
    • R(f);N_GUARD::QAB1(H),XP(e)
    • S(b);N_GUARD::QAB1(H)
    • S(b);N_GUARD,N_SPINS(c),XB(A)::QAB1(H)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • P(e);P_SPINP(e)::QAR1(H),XP(e)
      • Refutation
        • P(e);XQ(H)
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • R(a);N_GUARD,N_SPINS(c),XB(A)::QAR1(H)
        • R(f);N_GUARD,N_SPINS(c),XB(A)::QAB1(H),XP(e)
        • S(b);N_GUARD,N_SPINS(c),XB(A)::P(C)
        • P(e);::QAR1(H),XP(e)
      • Refutation
        • P(g);XQ(H)
    • Try
      • P(C);CHECK
      • Vars
        • S(b);OGATE,XP(C)::QAB1(H),XS(b)
      • Refutation
        • K(d);N_SPINS(c),P-FLIGHT
  • Actual
    • Q(H);XP(g)
    • Threat
      • QAR1(H)
    • Vars
      • R(a);N_GUARD,N_SPINS(c),XB(A)::QAR1(H)
      • R(f);N_GUARD,N_SPINS(c),XB(A)::QAB(H)
      • S(b);N_GUARD,N_SPINS(c),XB(A)::P(C)
      • P(e);::QAR1(H),XP(e)
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Developed and maintained by Brian Stephenson.
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