MESON Chess Problem Database

Problem Display
PID: 102657 (1B6/8/8/1N3p1b/1pB1p3/2p1kp1n/2QN4/5K2 w - - 0 1)

Jada, Faud Emile

Europe Echecs, 1978

1B6/8/8/1N3p1b/1pB1p3/2p1kp1n/2QN4/5K2

#2

6 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Ba7#
    • 1...cxd2
      • 2.Qb3#
    • 1...b3
      • 2.Qxc3#
    • 1...f4
      • 2.Ba7#
  • Tries
    • 1.Ke1?
      • threat
        • 2.Sf1#
      • 1...cxd2+
        • 2.Qxd2#
      • 1...f2+!
    • 1.Sxe4?
      • threat
        • 2.Qd3#
      • 1...fxe4
        • 2.Qc1#
      • 1...Sf4
        • 2.Ba7#
      • 1...Sf2!
    • 1.Bd5?
      • threat
        • 2.Sc4#
      • 1...cxd2
        • 2.Qb3#
      • 1...f2!
    • 1.Be6?
      • threat
        • 2.Sc4#
      • 1...cxd2
        • 2.Qb3#
      • 1...f2!
  • Keys
    • 1.Sxf3!
      • threat
        • 2.Qe2#
      • 1...Kxf3
        • 2.Qe2#
      • 1...Bxf3
        • 2.Qc1#
      • 1...exf3
        • 2.Qd3#
      • 1...Sg1
        • 2.Qf2#
      • 1...Sf4
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • S(d);SBLOCK::B(F)
    • P(a);OGATEB,SBLOCK,XS(C)::QAR(B)
    • P(e);N_GUARD::QAR2(B),XP(a)
    • P(g);SBLOCK::B(F)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • S(C)
      • Vars
        • P(a);CHECK,OGATE,XS(C)::QAB1(B),XP(a)
      • Refutation
        • P(c);CHECK
    • Try
      • S(C);XP(f)
      • Threat
        • QAR1(B)
      • Vars
        • P(g);SBLOCK,XS(C)::QAB(B)
        • S(d);SBLOCK::B(F)
      • Refutation
        • S(d);
    • Try
      • B(D);
      • Threat
        • S(C)
      • Vars
        • P(a);OGATEB,SBLOCK,XS(C)::QAR(B)
      • Refutation
        • P(c);
    • Try
      • B(D);
      • Threat
        • S(C)
      • Vars
        • P(a);OGATEB,SBLOCK,XS(C)::QAR(B)
      • Refutation
        • P(c);
  • Actual
    • S(C);XP(c)
    • Threat
      • QAR1(B)
    • Vars
      • K(b);P-FLIGHT,XS(C)::QAB1(B)
      • B(h);SBLOCK,XS(C)::QAB(B)
      • P(f);N_GUARD,SBLOCK,XS(C)::QAR1(B)
      • S(d);N_GUARD::QAB1(B)
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