MESON Chess Problem Database

Problem Display
PID: 99081 (nr6/1b5R/6Q1/k2N4/2Pn4/8/KNp5/R1b5 w - - 0 1)

Czene, Istvan

Magyar Sakkelet, 1991

nr6/1b5R/6Q1/k2N4/2Pn4/8/KNp5/R1b5

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb2
      • 2.Kxb2#
    • 1...Bc6
      • 2.Ra7#
    • 1...Se2
      • 2.Kb3#
    • 1...Sb3
      • 2.Kxb3#
    • 1...Sf3
      • 2.Kb3#
    • 1...Sf5
      • 2.Kb3#
    • 1...Sc6
      • 2.Kb3#
    • 1...Se6
      • 2.Kb3#
    • 1...Sb6
      • 2.Qxb6#
    • 1...Sc7
      • 2.Qb6#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Qa3#
      • 1...Bxb2
        • 2.Kxb2#
      • 1...Bxd5
        • 2.Ra7#
      • 1...Bc6
        • 2.Ra7#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sb5!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qa4#
      • 1...Bxb2
        • 2.Kxb2#
      • 1...Bxc6
        • 2.Ra7#
      • 1...Sxc6
        • 2.Kb3#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sb5
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • B(a);XS(C)::R(A)+K(B),XB(a)
    • B(e);OGATE::R(G)
    • S(c);::R(A)+K(B)
    • S(c);::R(A)+K(B),XS(c)
    • S(f);N_GUARD::QAB1(F),XS(f)
    • S(f);N_GUARD::QAB1(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR2(F)
      • Vars
        • B(a);XS(C)::R(A)+K(B),XB(a)
        • B(e);OGATE,P_PINP(D),XS(E)::R(G)
        • B(e);OGATE::R(G)
        • S(f);N_GUARD::QAB1(F),XS(f)
      • Refutation
        • S(c);
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • B(a);XS(C)::R(A)+K(B),XB(a)
      • B(e);OGATE,XQ(F)::R(G)
      • S(c);XQ(F)::R(A)+K(B)
      • S(f);N_GUARD::QAB1(F),XS(f)
      • S(c);N_GUARD::QAR1(F),XS(c)
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