MESON Chess Problem Database

Problem Display
PID: 172149 (n4B2/2p1pb2/2p3p1/NN1k3r/8/4QP2/K6b/8 w - - 0 1)

Apro, Laszlo

Revista de Sah, 1967

n4B2/2p1pb2/2p3p1/NN1k3r/8/4QP2/K6b/8

#2

6 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Sc3#
    • 1...Be6
      • 2.Qd4#
    • 1...c5
      • 2.Qe4#
    • 1...e5
      • 2.Qb3#
    • 1...e6
      • 2.Sc3#
      • 2.Qd4#
      • 2.Qc5#
      • 2.Qe4#
  • Tries
    • 1.Sb7?
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Qb3#
      • 1...Re5
        • 2.Qb3#
      • 1...Be5
        • 2.Qb3#
      • 1...e5
        • 2.Qb3#
      • 1...Rh4!
  • Keys
    • 1.Bxe7!
      • threat
        • 2.Sc3#
        • 2.Qe4#
      • 1...cxb5
        • 2.Qe4#
      • 1...Re5
        • 2.Qb3#
      • 1...Be5
        • 2.Qb3#
      • 1...Rh4
        • 2.Sc3#
      • 1...Bd6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(a);SBLOCK::S(E)
    • B(h);SBLOCK::QAR1(B)
    • P(d);SBLOCK::QAB1(B)
    • P(g);SBLOCK::QAB(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • R(c);SBLOCK::QAB(B)
        • B(a);SBLOCK::QAB(B)
        • P(g);SBLOCK::QAB(B)
      • Refutation
        • R(c);
  • Actual
    • B(F);XP(g)
    • Threat
      • DUALS(2)
    • Vars
      • P(d);XS(E)::QAB1(B)
      • R(c);SBLOCK::QAB(B)
      • B(a);SBLOCK::QAB(B)
      • R(c);::S(E)
      • B(a);::S(E)
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