MESON Chess Problem Database

Problem Display
PID: 61063 (3N2B1/3p3p/3p3P/3Nk1n1/1p2p1P1/1P6/K1PQ3P/6nr w - - 0 1)

Ojanen, Antti Gottfried

3rd Prize, Tidskrift for Schack, 1972

3N2B1/3p3p/3p3P/3Nk1n1/1p2p1P1/1P6/K1PQ3P/6nr

#2

10 + 9

3753 FIDE Album (1971-1973) 1978

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Sf7#
  • Keys
    • 1.c3!
      • threat
        • 2.Qf4#
        • 2.Qxg5#
        • 2.Qd4#
      • 1...Rxh2
        • 2.Qxh2#
      • 1...bxc3
        • 2.Qxc3#
      • 1...e3
        • 2.Qd4#
      • 1...Se2
        • 2.Qxg5#
      • 1...S1f3
        • 2.Qf4#
      • 1...S1h3
        • 2.Qd4#
      • 1...S5f3
        • 2.Qf4#
      • 1...S5h3
        • 2.Qd4#
      • 1...Se6
        • 2.Sf7#
      • 1...Sf7
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD,SBLOCK::S(I)
  • Actual
    • P(B);
    • Threat
      • DUALS(3)
    • Vars
      • R(b);OGATE,P_PINQ(C),XP(D)::QAB(C),XR(b)
      • P(c);OGATE,XP(B)::QAB(C),XP(c)
      • P(d);::QAB1(C)
      • S(a);::QAR2(C),XS(f)
      • S(a);::QAB1(C)
      • S(f);::QAB1(C)
      • S(f);N_GUARD,SBLOCK::S(I)
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