MESON Chess Problem Database

Problem Display
PID: 87894 (5B2/2n5/N7/n2p1Q2/2Nk1pr1/1b6/2pP4/2K3b1 w - - 0 1)

Wrobel, Marian

American Chess Problemist, 1952

5B2/2n5/N7/n2p1Q2/2Nk1pr1/1b6/2pP4/2K3b1

#2

6 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc4
      • 2.Bc5#
    • 1...Sxc4
      • 2.Bc5#
    • 1...dxc4
      • 2.Bc5#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Qd3#
      • 1...Bxc4
        • 2.Qf6#
      • 1...Sxc4
        • 2.Sxb3#
      • 1...dxc4
        • 2.Qe4#
      • 1...Rg3
        • 2.Qxf4#
      • 1...Kxc4!
    • 1.Sxc7?
      • threat
        • 2.Qxd5#
      • 1...Kxc4
        • 2.Qxd5#
      • 1...Bxc4
        • 2.Se6#
      • 1...dxc4
        • 2.Sb5#
        • 2.Se6#
        • 2.Bc5#
        • 2.Qd5#
      • 1...Rg5!
    • 1.Qe5+?
      • 1...Kd3
        • 2.Sb2#
      • 1...Kxc4!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qd3#
      • 1...Kxc4
        • 2.Qd3#
      • 1...Bxc4
        • 2.Sxc2#
      • 1...Sxc4
        • 2.Sc6#
      • 1...dxc4
        • 2.Bc5#
      • 1...Rg3
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK,XS(C)::B(F)
    • S(g);SBLOCK,XS(C)::B(F)
    • P(h);SBLOCK,XS(C)::B(F)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(D)
      • Vars
        • B(c);SBLOCK,XS(C)::QAB(D)
        • S(g);N_GUARD,SBLOCK,XS(C)::S(E),XB(c)
        • P(h);N_GUARD,SBLOCK,XS(C)::QAR1(D)
        • R(f);N_GUARD::QAR2(D),XP(e)
      • Refutation
        • K(d);P-FLIGHT,XS(C)
    • Try
      • S(E);XS(i)
      • Threat
        • QAR1(D),XP(h)
      • Vars
        • K(d);P-FLIGHT,XS(C)::QAB1(D),XP(h)
        • B(c);SBLOCK,XS(C)::S(E)
      • Refutation
        • R(f);
    • Try
      • Q(D);CHECK
      • Vars
        • K(d);P-FLIGHT::S(C)
      • Refutation
        • K(d);P-FLIGHT,XS(C)
  • Actual
    • S(E);
    • Threat
      • QAR1(D)
    • Vars
      • K(d);P-FLIGHT,XS(C)::QAB1(D)
      • B(c);N_GUARD,SBLOCK,XS(C)::S(E),XP(b)
      • S(g);N_GUARD,SBLOCK,XS(C)::S(E)
      • P(h);SBLOCK,XS(C)::B(F)
      • R(f);N_GUARD::QAR2(D),XP(e)
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