MESON Chess Problem Database

Problem Display
PID: 135600 (8/5p2/5p2/2pP1Q1B/PPkr3R/2Pp4/1K4b1/4N1b1 w - - 0 1)

Vieira, Ricardo de Mattos

The Problemist Supplement, 2010

8/5p2/5p2/2pP1Q1B/PPkr3R/2Pp4/1K4b1/4N1b1

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Qxd3#
    • 1...Rg4
      • 2.Qxd3#
    • 1...Rxh4
      • 2.Qxd3#
    • 1...Bxd5
      • 2.Qxd3#
    • 1...d2
      • 2.Be2#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sa3#
      • 1...dxc2
        • 2.Be2#
      • 1...cxb4!
    • 1.Bxf7?
      • threat
        • 2.Qxd3#
      • 1...cxb4
        • 2.Qc8#
      • 1...Re4
        • 2.d6#
      • 1...Bf1
        • 2.d6#
      • 1...d2
        • 2.Qd3#
      • 1...Be4!
  • Keys
    • 1.d6!
      • threat
        • 2.Qxc5#
      • 1...Rxh4
        • 2.Qxd3#
      • 1...cxb4
        • 2.Qb5#
      • 1...Re4
        • 2.Bxf7#
      • 1...Rf4
        • 2.Qxd3#
      • 1...Rg4
        • 2.Qxd3#
      • 1...Bd5
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(e);::QAB1(H),XP(c)
    • R(e);N_SPINR(e),XR(F)::QAB1(H),XP(c)
    • B(b);SBLOCK,XP(G)::QAB1(H),XP(c)
    • P(c);OGATEB::B(I)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • P(c);OGATEB,XS(A)::B(I)
      • Refutation
        • P(f);XP(E)
    • Try
      • B(I);XP(h)
      • Threat
        • QAB1(H),XP(c)
      • Vars
        • P(f);OGATEB,XP(E)::QAR(H)
        • R(e);S_CUTB(b)::B(I)+P(G)
        • B(b);N_GUARD::B(I)+P(G)
        • P(c);::QAB1(H)
      • Refutation
        • B(b);N_SPINR(e)
  • Actual
    • P(G);
    • Threat
      • QAR1(H),XP(f)
    • Vars
      • R(e);N_SPINR(e),XR(F)::QAB1(H),XP(c)
      • P(f);OGATE,XP(E)::QAB1(H)
      • R(e);S_CUTB(b)::B(I),XP(h)
      • R(e);::QAB1(H),XP(c)
      • B(b);SBLOCK::QAB1(H),XP(c)
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