MESON Chess Problem Database

Problem Display
PID: 35201 (7b/B2n1NQ1/4pr1p/2npNPp1/1R1pk3/6PB/3P2P1/3K4 w - - 0 1)

Seider, Shlomo

1st Prize, Schakend Nederland, 1976

7b/B2n1NQ1/4pr1p/2npNPp1/1R1pk3/6PB/3P2P1/3K4

#2

11 + 10

3841 The Art of Israeli Chess Composition 1983
3674 As in all Arts 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf5
      • 2.Sd6#
    • 1...Rg6
      • 2.Sd6#
    • 1...Sd3
      • 2.Rxd4#
    • 1...Sa4
      • 2.Rxd4#
    • 1...Sa6
      • 2.Rxd4#
    • 1...Sb7
      • 2.Rxd4#
    • 1...g4
      • 2.Qxg4#
  • Tries
    • 1.Bxc5?
      • threat
        • 2.Rxd4#
      • 1...g4
        • 2.Qxg4#
      • 1...Sxc5!
    • 1.Qxg5?
      • threat
        • 2.Qe3#
        • 2.Qf4#
        • 2.Qh4#
        • 2.Qg4#
      • 1...Rxf5
        • 2.Qe3#
      • 1...Rxf7
        • 2.Qe3#
        • 2.Qf4#
      • 1...Sxe5
        • 2.Qe3#
      • 1...exf5
        • 2.Qe3#
        • 2.Qf4#
      • 1...Rg6
        • 2.Qe3#
        • 2.Qf4#
      • 1...Sd3
        • 2.Rxd4#
        • 2.Qe3#
      • 1...h5
        • 2.Qe3#
        • 2.Qf4#
        • 2.Qh4#
      • 1...hxg5!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Sf2#
      • 1...Kd3
        • 2.Sf2#
      • 1...Kxf5
        • 2.Sd6#
      • 1...Rxf5
        • 2.Rxd4#
      • 1...Sd3
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(g);XP(H)::S(J)
    • R(g);::S(J)
    • S(c);::R1(F),XP(a)
    • P(e);OGATE::QAR2(K),XP(e)
  • Tries
    • Try
      • B(I);XS(c)
      • Threat
        • R1(F),XP(a)
      • Vars
        • P(e);OGATE::QAR2(K),XP(e)
      • Refutation
        • S(i);XB(I)
    • Try
      • Q(K);XP(e)
      • Threat
        • DUALS(4)
      • Vars
        • R(g);XP(H)::QAR1(K)
        • S(i);XS(G)::QAR1(K)
      • Refutation
        • P(h);XQ(K)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(b);N_SPINP(a),S_FLIGHT::S(G)
      • K(b);N_SPINP(a),S_FLIGHT,XP(H)::S(J)
      • R(g);SBLOCK,XP(H)::R1(F),XP(a)
      • S(c);SBLOCK::S(J)
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