MESON Chess Problem Database

Problem Display
PID: 134356 (1B6/3QK3/1Pp2Rp1/2pNP1Rp/1P2k3/2P1p1Pn/2Pp1b2/3rr3 w - - 0 1)

Janevski, Zivko

Comm., The Problemist, 2009

1B6/3QK3/1Pp2Rp1/2pNP1Rp/1P2k3/2P1p1Pn/2Pp1b2/3rr3

#2

12 + 11

56 The Problemist 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sg1
      • 2.Rf4#
    • 1...Sf4
      • 2.Rxf4#
    • 1...Sxg5
      • 2.Rf4#
  • Tries
    • 1.Sxe3?
      • threat
        • 2.Qd3#
      • 1...Kxe3
        • 2.Qd3#
      • 1...Rxe3
        • 2.Qxc6#
      • 1...c4
        • 2.Qd4#
      • 1...Sf4!
    • 1.Sc7?
      • threat
        • 2.Qxc6#
        • 2.Qd3#
      • 1...Sf4
        • 2.Rxf4#
      • 1...e2
        • 2.Qd3#
      • 1...c4
        • 2.Qxc6#
        • 2.Qd4#
      • 1...Sxg5!
    • 1.Rg4+?
      • 1...Sf4
        • 2.Rgxf4#
        • 2.Rfxf4#
      • 1...hxg4!
    • 1.Qf5+?
      • 1...Kxd5
        • 2.Qd3#
      • 1...gxf5!
    • 1.Qxc6?
      • threat
        • 2.Sf4#
        • 2.Sc7#
      • 1...Sxg5
        • 2.Sf4#
        • 2.Rf4#
      • 1...Sf4
        • 2.Sxf4#
        • 2.Rxf4#
      • 1...e2!
    • 1.e6?
      • threat
        • 2.Re5#
      • 1...Sxg5
        • 2.Rf4#
      • 1...Sf4
        • 2.Rxf4#
      • 1...Bxg3!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Qxc6#
      • 1...Kf3
        • 2.Qxc6#
      • 1...Sxf4
        • 2.Rxf4#
      • 1...e2
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(f);N_GUARD::R1(I)
    • S(f);N_GUARD::R1(I),XS(f)
    • S(f);N_GUARD,XR(G)::R1(I)
  • Tries
    • Try
      • S(E);XP(e)
      • Threat
        • QAB1(J)
      • Vars
        • K(g);P-FLIGHT,XS(E)::QAR1(J)
        • R(b);SBLOCK,XS(E)::QAB(J),XP(j)
        • P(h);N_GUARD::QAR1(J)
      • Refutation
        • S(f);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);N_GUARD::R1(I),XS(f)
        • P(e);::QAB1(J)
      • Refutation
        • S(f);XR(G)
    • Try
      • R(G);CHECK
      • Refutation
        • P(i);XR(G)
    • Try
      • Q(J);CHECK
      • Vars
        • K(g);OGATE,S_FLIGHT,XS(E)::QAR2(J)
      • Refutation
        • P(k);XQ(J)
    • Try
      • Q(J);XP(j)
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);
    • Try
      • P(F);
      • Threat
        • R1(G)
      • Vars
        • S(f);N_GUARD,XR(G)::R1(I)
        • S(f);N_GUARD::R1(I),XS(f)
      • Refutation
        • B(d);XP(C)
  • Actual
    • S(E);
    • Threat
      • QAB(J),XP(j)
    • Vars
      • K(g);S_FLIGHT::QAB(J),XP(j)
      • S(f);OGATE,XS(E)::R1(I),XS(f)
      • P(e);::QAB1(J)
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