MESON Chess Problem Database

Problem Display
PID: 35209 (2R5/p2N1K2/1p1pp1Q1/1N1kP3/2p3P1/1n2p1n1/5P2/8 w - - 0 1)

Seider, Shlomo

The Problemist, 1991

2R5/p2N1K2/1p1pp1Q1/1N1kP3/2p3P1/1n2p1n1/5P2/8

#2

8 + 9

3674 As in all Arts 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Sc3#
    • 1...Se4
      • 2.Qxe6#
    • 1...dxe5
      • 2.Sf6#
  • Tries
    • 1.Qd3+?
      • 1...Sd4
        • 2.Sc3#
        • 2.Qxd4#
      • 1...cxd3!
    • 1.f3?
      • threat
        • 2.Qxe6#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sc5!
    • 1.f4?
      • threat
        • 2.Sf6#
      • 1...Se4
        • 2.Qxe6#
      • 1...Sh5!
  • Keys
    • 1.fxe3!
      • threat
        • 2.Sc3#
      • 1...dxe5
        • 2.Sf6#
      • 1...Se2
        • 2.e4#
      • 1...Se4
        • 2.Qxe6#
      • 1...c3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(a);SBLOCK::S(C)
    • S(c);SBLOCK::QAB1(E),XP(h)
    • P(g);SBLOCK,XP(D)::S(F)
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • P(d);XQ(E)
    • Try
      • P(A);
      • Threat
        • QAB1(E),XP(h)
      • Vars
        • S(a);SBLOCK::S(C)
      • Refutation
        • S(a);
    • Try
      • P(A);
      • Threat
        • S(F)
      • Vars
        • S(c);SBLOCK::QAB1(E),XP(h)
      • Refutation
        • S(c);
  • Actual
    • P(A);XP(b)
    • Threat
      • S(C)
    • Vars
      • P(g);SBLOCK,XP(D)::S(F)
      • S(c);N_GUARD::P(A)
      • S(c);SBLOCK::QAB1(E),XP(h)
      • P(d);::S(C),XP(d)
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