MESON Chess Problem Database

Problem Display
PID: 99315 (2K2n2/8/4NpP1/2p2k1P/2BP4/3b3n/1Q3NP1/3q4 w - - 0 1)

Nagy, Odon

Magyar Sakkujsag TT, 1911

2K2n2/8/4NpP1/2p2k1P/2BP4/3b3n/1Q3NP1/3q4

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.g4#
    • 1...Qb3
      • 2.g4#
    • 1...Qa4
      • 2.g4#
    • 1...Qa1
      • 2.g4#
    • 1...Qb1
      • 2.g4#
    • 1...Qc1
      • 2.g4#
    • 1...Qe1
      • 2.g4#
    • 1...Qf1
      • 2.g4#
    • 1...Qh1
      • 2.g4#
    • 1...Qd2
      • 2.g4#
    • 1...cxd4
      • 2.Qb5#
  • Keys
    • 1.Qd2!
      • threat
        • 2.Sg7#
      • 1...Qxh5
        • 2.Qxd3#
      • 1...Qxd2
        • 2.g4#
      • 1...Sxf2
        • 2.Qf4#
      • 1...Sxe6
        • 2.Bxd3#
      • 1...cxd4
        • 2.Qa5#
      • 1...Sf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::P(C)
    • P(d);OGATEB,XP(E)::QAR(A)
  • Actual
    • Q(A);
    • Threat
      • S(G)
    • Vars
      • Q(a);N_GUARD,XP(F)::QAB(A),XB(b)
      • Q(a);N_GUARD,XQ(A)::P(C)
      • S(c);N_GUARD,XS(B)::QAR1(A)
      • S(g);SBLOCK,XS(G)::B(D),XB(b)
      • P(d);OGATEB,XP(E)::QAR(A)
      • S(c);N_GUARD::QAR1(A),XS(c)
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