MESON Chess Problem Database

Problem Display
PID: 98990 (1bbQ1n2/5B2/2p3pN/rRp5/1rp1Nk1P/5P1n/5PK1/8 w - - 0 1)

Armeni, Alberto

Levelezesi Sakkhirado, 1981

1bbQ1n2/5B2/2p3pN/rRp5/1rp1Nk1P/5P1n/5PK1/8

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qf6#
    • 1...Be5
      • 2.Qd2#
    • 1...Bd6
      • 2.Qxd6#
    • 1...Ba7
      • 2.Qc7#
      • 2.Qd6#
    • 1...Bc7
      • 2.Qxc7#
    • 1...Bg4
      • 2.Qxb8#
    • 1...Bf5
      • 2.Qxb8#
    • 1...Ba6
      • 2.Qf6#
      • 2.Qxb8#
    • 1...Be6
      • 2.Qxb8#
    • 1...Bb7
      • 2.Qf6#
      • 2.Qxb8#
    • 1...Bd7
      • 2.Qxb8#
    • 1...Sg1
      • 2.Qg5#
    • 1...Sxf2
      • 2.Qg5#
    • 1...Sg5
      • 2.Qxg5#
    • 1...Se6
      • 2.Qf6#
  • Tries
    • 1.Rxb8?
      • threat
        • 2.Qc7#
        • 2.Qd6#
      • 1...Ke5
        • 2.Qf6#
        • 2.Qd6#
      • 1...Sxf2
        • 2.Qg5#
      • 1...Rb7
        • 2.Qd6#
      • 1...Ra7
        • 2.Qd6#
      • 1...Bd7
        • 2.Qc7#
      • 1...Se6
        • 2.Qf6#
        • 2.Qd6#
      • 1...Sd7!
  • Keys
    • 1.Sxc5!
      • threat
        • 2.Qd4#
      • 1...Ke5
        • 2.Sd3#
      • 1...Sxf2
        • 2.Qg5#
      • 1...Be5
        • 2.Qd2#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Bf5
        • 2.Qxb8#
      • 1...Bd7
        • 2.Qxb8#
      • 1...Sg5
        • 2.Qxg5#
      • 1...Se6
        • 2.Qf6#
      • 1...Sd7
        • 2.Se6#
      • 1...c3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • K(d);P_SPINP(f),S_FLIGHT::QAB1(I)
    • B(i);SBLOCK::QAB(I)
    • B(i);N_GUARD::QAB(I),XB(i)
    • B(j);OGATE::QAB(I),XB(i)
    • S(a);N_GUARD::QAB1(I)
    • S(a);N_GUARD,XP(A)::QAB1(I)
    • S(a);N_GUARD::QAB1(I),XS(a)
    • S(k);S_CUTB(j)::QAR2(I)
  • Tries
    • Try
      • R(F);XB(i)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD,XP(A)::QAB1(I)
        • R(b);::QAB(I)
        • R(e);::QAB(I)
        • B(j);::QAB(I)
      • Refutation
        • S(k);
  • Actual
    • S(D);XP(f)
    • Threat
      • QAR2(I)
    • Vars
      • K(d);S_FLIGHT::R(F)+S(D),DCHECK
      • S(a);N_GUARD,XP(A)::QAB1(I)
      • B(i);SBLOCK::QAB(I)
      • B(i);N_GUARD::QAB(I),XB(i)
      • B(j);OGATE::QAB(I),XB(i)
      • S(a);N_GUARD::QAB1(I),XS(a)
      • S(k);S_CUTB(j)::QAR2(I)
      • S(k);N_GUARD,S_CUTB(j)::S(D)
      • P(c);N_GUARD::S(D)
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