MESON Chess Problem Database

Problem Display
PID: 259776 (8/8/8/2p2P2/Rn1k1K2/R2PN3/n1P1PB2/8 w - - 0 1)

Colaneri, Bruno

Tolosa-100 MT (Problemas), 2016

8/8/8/2p2P2/Rn1k1K2/R2PN3/n1P1PB2/8

#2

9 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.c3#
  • Tries
    • 1.Be1?
      • 1...Sc1
        • 2.Bc3#
        • 2.c3#
      • 1...Sc3
        • 2.Bxc3#
      • 1...c4!
    • 1.Rxb4+?
      • 1...Sxb4
        • 2.c3#
      • 1...c4
        • 2.Rxc4#
      • 1...cxb4!
  • Keys
    • 1.c4!
      • threat
        • 2.Sd1#
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sg2#
        • 2.Sg4#
        • 2.Sd5#
      • 1...Sxd3+
        • 2.Rxd3#
      • 1...Sd5+
        • 2.Sxd5#
      • 1...Sc2
        • 2.Sxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::P(A)
  • Tries
    • Try
      • B(C);
      • Vars
        • S(a);N_GUARD::B(C),XS(a)
      • Refutation
        • P(d);N_SPINS(b)
    • Try
      • R(G);CHECK,XS(b)
      • Vars
        • S(a);XR(G)::P(A)
        • P(d);P_SPINP(d)::R1(G),XP(d)
      • Refutation
        • P(d);XR(G)
  • Actual
    • P(A);N_PINS(b)
    • Threat
      • DUALS(6)
    • Vars
      • S(b);CHECK,OGATE,XP(E)::R1(D),XS(b)
      • S(b);CHECK::B(C)+S(F),XS(b)
      • S(b);::B(C)+S(F),DCHECK,XS(b)
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