MESON Chess Problem Database

Problem Display
PID: 93905 (2R1R3/1N3N2/8/3p4/1rPkPr2/3p1p2/1p1Q4/1K6 w - - 0 1)

Wielgos, Oskar

Sachove umeni (Ceskoslovensky sach), 1963

2R1R3/1N3N2/8/3p4/1rPkPr2/3p1p2/1p1Q4/1K6

#2

8 + 7

6490 yacpdb 2009
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...dxc4
      • 2.Rcd8#
    • 1...dxe4
      • 2.Red8#
  • Tries
    • 1.Se5?
      • threat
        • 2.Qxd3#
      • 1...Kxe4
        • 2.Qxd3#
      • 1...dxc4
        • 2.Sc6#
      • 1...dxe4
        • 2.Rcd8#
      • 1...Rb3!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qxd3#
      • 1...Kxc4
        • 2.Qxd3#
      • 1...dxc4
        • 2.Red8#
      • 1...dxe4
        • 2.Se6#
      • 1...Rb3
        • 2.Sxb3#

This anticipates 159498(1980)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(g);OGATEB,SBLOCK,XP(C)::R(G)
    • P(g);OGATEB,SBLOCK,XP(D)::R(H)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(B),XP(b)
      • Vars
        • K(e);N_SPINP(b),P-FLIGHT,XP(D)::QAB1(B),XP(b)
        • P(g);SBLOCK,XP(C)::S(F)
        • P(g);OGATEB,SBLOCK,XP(D)::R(G)
      • Refutation
        • R(d);
  • Actual
    • S(E);
    • Threat
      • QAR1(B),XP(b)
    • Vars
      • K(e);N_SPINP(b),P-FLIGHT,XP(C)::QAB1(B),XP(b)
      • P(g);OGATEB,SBLOCK,XP(C)::R(H)
      • P(g);SBLOCK,XP(D)::S(E)
      • R(d);N_GUARD::S(E),XR(d)
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