MESON Chess Problem Database

Problem Display
PID: 64483 (5K2/2B3N1/2p2pRn/3k3n/p5pN/p3PP1B/1bQ5/8 w - - 0 1)

Buyanov, Aleksandr N

Pedagogusok Lapja, 1982

5K2/2B3N1/2p2pRn/3k3n/p5pN/p3PP1B/1bQ5/8

#2

9 + 9

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.e4#
    • 1...gxf3
      • 2.Be6#
    • 1...g3
      • 2.Be6#
    • 1...c5
      • 2.Qe4#
    • 1...f5
      • 2.Qxc6#
  • Tries
    • 1.Bf1?
      • threat
        • 2.Qc4#
      • 1...c5
        • 2.Qe4#
      • 1...Bc3!
    • 1.Qb3+?
      • 1...Kc5
        • 2.Se6#
      • 1...axb3!
    • 1.Qd3+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...Kc5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qe4#
      • 1...Kxe6
        • 2.Qxc6#
      • 1...gxf3
        • 2.e4#
      • 1...Bd4
        • 2.Qa2#
      • 1...Be5
        • 2.Qa2#
      • 1...Sg3
        • 2.Sf4#
      • 1...f5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(a);SBLOCK::P(B)
    • P(d);OGATE,XP(C)::B(D)
    • P(d);OGATE::B(D)
    • P(g);SBLOCK::QAB1(A)
    • P(h);::QAB1(A),XP(g)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAB1(A)
      • Vars
        • P(g);SBLOCK::QAB1(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);P-FLIGHT::S(H)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(A),XB(a)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • S(H);
    • Threat
      • QAB1(A)
    • Vars
      • K(e);P_SPINP(d),S_FLIGHT,XS(H)::QAR2(A),XP(g)
      • P(d);XP(C)::P(B)
      • B(a);OGATE::QAB(A)
      • S(f);N_GUARD::S(H)
      • P(h);::QAR1(A)
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