MESON Chess Problem Database

Problem Display
PID: 194547 (3k2n1/N3p3/1K5R/1B2pNb1/3p3B/8/3R4/5r2 w - - 0 1)

Coello Alonso, Jose Antonio

BCPS Website, 2019

3k2n1/N3p3/1K5R/1B2pNb1/3p3B/8/3R4/5r2

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd2
      • 2.Rd6#
    • 1...Be3
      • 2.Rd6#
    • 1...Bf4
      • 2.Rd6#
    • 1...d3
      • 2.Rxd3#
    • 1...e4
      • 2.Rxd4#
  • Tries
    • 1.Bxg5?
      • threat
        • 2.Rd6#
      • 1...Sxh6
        • 2.Bxe7#
      • 1...Sf6!
    • 1.Rh8?
      • threat
        • 2.Rxg8#
      • 1...Bh6
        • 2.Bxe7#
      • 1...Rxf5!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Se6#
      • 1...exd4
        • 2.Rxd4#
      • 1...e6
        • 2.Sf5#
      • 1...Be3
        • 2.Rd6#

This is a version of 194546

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(d);N_SPINP(b),P_SPINP(e),XR(A)::R(F)
    • B(d);S_CUTP(e)::R(F)
    • P(b);OGATEB::R(A),XP(b)
    • P(c);N_GUARD::R(A),XP(b)
  • Tries
    • Try
      • B(B);XB(d)
      • Threat
        • R(F)
      • Vars
        • S(g);N_GUARD,XR(F)::B(B),XP(e)
      • Refutation
        • S(g);
    • Try
      • R(F);P_PINS(g)
      • Threat
        • R(F),XS(g)
      • Vars
        • B(d);OGATE::B(B),XP(e)
      • Refutation
        • R(a);XS(D)
  • Actual
    • S(D);XP(b)
    • Threat
      • R(A)+S(D),DCHECK
    • Vars
      • P(c);OGATE,P_SPINP(c),XS(D)::R(A),XP(c)
      • P(e);P_SPINB(d)::R(A)+S(D)
      • B(d);P_PINS(D),P_SPINP(e)::R(F)
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