MESON Chess Problem Database

Problem Display
PID: 81150 (5K2/3p1N1B/4pk2/5n2/3Rp3/3p4/1R6/B7 w - - 0 1)

Salazar Lopez, Francisco

2nd Prize, Urania, 1980

5K2/3p1N1B/4pk2/5n2/3Rp3/3p4/1R6/B7

#2

6 + 6

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd4
      • 2.Rf2#
  • Tries
    • 1.Rf2?
      • threat
        • 2.Rd6#
      • 1...d6
        • 2.Rxd6#
      • 1...d5!
  • Keys
    • 1.Rg2!
      • threat
        • 2.Rg6#
      • 1...Sxd4
        • 2.Rf2#
      • 1...Se3
        • 2.Rd6#
      • 1...Sg3
        • 2.Rd6#
      • 1...Sh4
        • 2.Rd6#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Sh6
        • 2.Rd6#
      • 1...Se7
        • 2.Rd6#
      • 1...Sg7
        • 2.Rd6#

This anticipates 71940(2007)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATEB,XR(C)::R(B)
  • Tries
    • Try
      • R(B);P_PINS(c)
      • Threat
        • B(A)+R(C)
      • Vars
        • P(f);::B(A)+R(C),XP(f)
      • Refutation
        • P(f);
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • S(c);OGATEB,P_SPINS(c),XR(C)::R(B)
      • S(c);N_GUARD::B(A)+R(C)
      • S(c);N_GUARD::B(A)+R(C),XS(c)
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