MESON Chess Problem Database

Problem Display
PID: 98706 (8/4n3/3BR3/r2p2QK/2NkB3/p2N4/1P6/8 w - - 0 1)

Salazar Lopez, Francisco

Problemas, 1969

8/4n3/3BR3/r2p2QK/2NkB3/p2N4/1P6/8

#2

8 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sde5?
      • threat
        • 2.Qe3#
      • 1...Kxe4
        • 2.Qg4#
      • 1...dxc4
        • 2.Sf3#
      • 1...dxe4
        • 2.Qd2#
      • 1...Sf5!
    • 1.Sd2?
      • threat
        • 2.Be5#
        • 2.Qg1#
      • 1...axb2
        • 2.Be5#
      • 1...Sf5
        • 2.Be5#
      • 1...Sc6
        • 2.Qg1#
      • 1...Sg6
        • 2.Qg1#
      • 1...dxe4!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qc3#
      • 1...dxc4+
        • 2.Sc5#
      • 1...dxe4+
        • 2.Sde5#
      • 1...Kxc4
        • 2.Qb4#
      • 1...axb2
        • 2.Sdxb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • QAB1(E)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XB(D)::QAR2(E)
        • P(d);SBLOCK,XS(C)::S(B)
        • P(d);SBLOCK,XB(D)::QAR2(E)
      • Refutation
        • S(e);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XP(A)::B(G)
        • S(e);::B(G)
        • S(e);::QAB(E)
      • Refutation
        • P(d);P_PINQ(E),XB(D)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • P(d);CHECK,SBLOCK,XS(C)::QAR(E)+S(B)
      • P(d);CHECK,SBLOCK,XB(D)::QAR(E)+S(B)
      • K(b);OGATEB,P-FLIGHT,XS(C)::QAR1(E)
      • P(a);XP(A)::QAR(E)+S(B),XP(a)
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