MESON Chess Problem Database

Problem Display
PID: 58099 (2K4b/1p5p/n3N1Bp/Q2P1R2/1n1pk1p1/3p3r/3B4/8 w - - 0 1)

Georgiev, Emil M

Chess Life, 1958

2K4b/1p5p/n3N1Bp/Q2P1R2/1n1pk1p1/3p3r/3B4/8

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Rf4#
    • 1...Sxd5
      • 2.Qxd5#
    • 1...Sc5
      • 2.Sxc5#
    • 1...Sc7
      • 2.Sc5#
    • 1...Sb8
      • 2.Sc5#
    • 1...h5
      • 2.Sg5#
  • Tries
    • 1.Rf7+?
      • 1...Ke5
        • 2.Bf4#
      • 1...hxg6!
    • 1.Rf8+?
      • 1...Ke5
        • 2.Bf4#
      • 1...hxg6!
    • 1.d6?
      • threat
        • 2.Rf4#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sc5
        • 2.Sxc5#
      • 1...b5!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qf4#
      • 1...Sxd5
        • 2.Rf4#
      • 1...Sxc7
        • 2.Sc5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Rf3
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(k);SBLOCK::B(F)+R(D),DCHECK
    • S(c);OGATE,XP(C)::QAB1(B),XS(c)
    • S(g);N_GUARD::S(E),XS(g)
    • S(g);N_GUARD::S(E)
    • P(h);N_GUARD::S(E)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(e);P-FLIGHT::B(A)
      • Refutation
        • P(j);XB(F)
    • Try
      • R(D);CHECK
      • Vars
        • K(e);P-FLIGHT::B(A)
      • Refutation
        • P(j);XB(F)
    • Try
      • P(C);
      • Threat
        • B(F)+R(D),DCHECK
      • Vars
        • S(c);N_GUARD::QAB1(B),XS(c)
        • S(g);N_GUARD::S(E),XS(g)
      • Refutation
        • P(i);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • S(c);SBLOCK,XP(C)::B(F)+R(D),DCHECK
      • S(g);N_GUARD,XQ(B)::S(E)
      • B(k);N_GUARD::QAR1(B),XB(k)
      • R(b);SBLOCK::B(F)+R(D),DCHECK
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