MESON Chess Problem Database

Problem Display
PID: 65701 (1K3Qq1/1n3brN/2Ppk3/pp3p1p/5P1B/brN1n3/B2R4/8 w - - 0 1)

Zarur, Almiro Elias

Comm., Phenix, 1995

1K3Qq1/1n3brN/2Ppk3/pp3p1p/5P1B/brN1n3/B2R4/8

#2

9 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh7
      • 2.Qe7#
      • 2.Qc8#
    • 1...Qxf8+
      • 2.Sxf8#
    • 1...Bg6
      • 2.Sg5#
    • 1...Be8
      • 2.Qf6#
    • 1...Sc5
      • 2.Rxd6#
    • 1...Sd8
      • 2.Qe7#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Sc7#
      • 1...Qxf8+
        • 2.Sxf8#
      • 1...Bg6
        • 2.Sg5#
      • 1...Be8
        • 2.Qf6#
      • 1...Sxd5!
    • 1.Bxb3+?
      • 1...Sc4
        • 2.Re2#
      • 1...Sd5
        • 2.Bxd5#
        • 2.Re2#
      • 1...d5!
  • Keys
    • 1.Sxb5!
      • threat
        • 2.Sc7#
      • 1...Qxf8+
        • 2.Sxf8#
      • 1...Bg6
        • 2.Sg5#
      • 1...Be8
        • 2.Qf6#
      • 1...Sd5
        • 2.Sd4#
      • 1...Sc5
        • 2.Rxd6#
      • 1...Sd8
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(m);CHECK,XQ(I)::S(G),XQ(m)
    • B(k);S_CUTR(l)::S(G)
    • B(k);N_PINQ(I)::QAR1(I)
    • S(j);N_GUARD,S_CUTB(a)::R1(B),XP(h)
    • S(j);N_PINQ(I)::QAR1(I)
  • Tries
    • Try
      • S(C);N_PINR(b)
      • Threat
        • S(C)
      • Vars
        • Q(m);CHECK,XQ(I)::S(G),XQ(m)
        • B(k);S_CUTR(l)::S(G)
        • B(k);N_PINQ(I)::QAR1(I)
      • Refutation
        • S(c);XS(C)
    • Try
      • B(A);CHECK,XR(b)
      • Vars
        • S(c);P_SPINS(c),S_CUTP(h)::R(B)
      • Refutation
        • P(h);P_SPINP(h)
  • Actual
    • S(C);XP(e)
    • Threat
      • S(C)
    • Vars
      • Q(m);CHECK,XQ(I)::S(G),XQ(m)
      • B(k);S_CUTR(l)::S(G)
      • B(k);N_PINQ(I)::QAR1(I)
      • S(c);N_SPINR(b),SBLOCK::S(C)
      • S(j);N_GUARD,P_PINS(C),S_CUTB(a)::R1(B),XP(h)
      • S(j);N_PINQ(I),P_PINS(C)::QAR1(I)
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