MESON Chess Problem Database

Problem Display
PID: 96666 (4K3/2pB2Q1/3p1rn1/2B1kP2/3R4/4P3/8/8 w - - 0 1)

Riczu, Lajos

Problemas, 1972

4K3/2pB2Q1/3p1rn1/2B1kP2/3R4/4P3/8/8

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.exf4#
    • 1...Sh4
      • 2.Qg3#
    • 1...Se7
      • 2.Qg3#
    • 1...Sf8
      • 2.Qg3#
    • 1...Sh8
      • 2.Qg3#
    • 1...c6
      • 2.Bxd6#
  • Tries
    • 1.Qe7+?
      • 1...Re6
        • 2.Qxe6#
      • 1...Sxe7!
  • Keys
    • 1.Be6!
      • 1...dxc5
        • 2.Qxc7#
      • 1...d5
        • 2.Qxc7#
      • 1...Sf4
        • 2.exf4#
      • 1...Sh4
        • 2.Qg3#
      • 1...Se7
        • 2.Qg3#
      • 1...Sf8
        • 2.Qg3#
      • 1...Sh8
        • 2.Qg3#
      • 1...c6
        • 2.Bxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);OGATE::P(A),XS(d)
    • S(d);OGATE::QAB(F)
    • P(e);N_GUARD::B(C),XP(b)
  • Tries
    • Try
      • Q(F);CHECK,N_PINR(c)
      • Vars
        • R(c);N_GUARD,P_PINQ(F),P_SPINR(c)::QAR1(F),XR(c)
      • Refutation
        • S(d);XQ(F)
  • Actual
    • B(E);
    • Vars
      • P(b);OGATEB,XB(C)::QAB(F),XP(e)
      • P(b);OGATEB::QAB(F),XP(e)
      • S(d);OGATE::P(A),XS(d)
      • S(d);OGATE::QAB(F)
      • P(e);N_GUARD::B(C),XP(b)
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