MESON Chess Problem Database

Problem Display
PID: 103574 (1B6/n6r/R1PNp3/1bkP4/3p4/K1N5/4Qn2/8 w - - 0 1)

Havran, Jozef

Comm., UV CSTV, 1983

1B6/n6r/R1PNp3/1bkP4/3p4/K1N5/4Qn2/8

#2

8 + 7

3485 Sachova skladba 1985
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Sb7#
    • 1...Rh2
      • 2.Sb7#
    • 1...Rh3
      • 2.Sb7#
    • 1...Rh4
      • 2.Sb7#
    • 1...Rh5
      • 2.Sb7#
    • 1...Rh6
      • 2.Sb7#
    • 1...Rb7
      • 2.Sxb7#
    • 1...Rh8
      • 2.Sb7#
    • 1...Ba4
      • 2.Qc4#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bxc6
      • 2.Qc4#
    • 1...Sd1
      • 2.Sde4#
    • 1...Sh1
      • 2.Sde4#
    • 1...Sh3
      • 2.Sde4#
    • 1...Se4
      • 2.Sdxe4#
    • 1...Sg4
      • 2.Sde4#
    • 1...Sxc6
      • 2.Qxb5#
    • 1...Sc8
      • 2.Qxb5#
    • 1...d3
      • 2.Qxf2#
      • 2.Qe3#
  • Tries
    • 1.Sa4+?
      • 1...Bxa4
        • 2.Qc4#
      • 1...Kxd5!
  • Keys
    • 1.Qe5!
      • threat
        • 2.dxe6#
      • 1...Bxa6
        • 2.Sa4#
      • 1...Bxc6
        • 2.dxc6#
      • 1...Sxc6
        • 2.dxc6#
      • 1...exd5
        • 2.Qxd5#
      • 1...Rh5
        • 2.Bxa7#
      • 1...Bc4
        • 2.Sa4#
      • 1...Sd3
        • 2.Sce4#
      • 1...Sg4
        • 2.Sce4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 3
    • REMOVED MATES = 13
  • Sets
    • R(g);N_GUARD::S(G)
    • R(g);N_GUARD,P_PINS(C)::S(G)
    • R(g);N_GUARD::S(G),XR(g)
    • B(c);N_GUARD::QAR1(A)
    • B(c);N_GUARD::QAR1(A),XB(c)
    • B(c);N_GUARD,XP(F)::QAR1(A)
    • S(a);N_GUARD::S(G)
    • S(a);N_GUARD::S(G),XS(a)
    • S(f);N_GUARD,XP(F)::QAR1(A),XB(c)
    • S(f);N_GUARD::QAR1(A),XB(c)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • B(c);XS(C)::QAR1(A)
      • Refutation
        • K(d);P-FLIGHT,XP(D)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+P(D),XP(e)
    • Vars
      • B(c);N_GUARD,XR(E)::S(C)
      • B(c);OGATE,XP(F)::QAR(A)+P(D),XB(c)
      • S(f);OGATE,XP(F)::QAR(A)+P(D),XS(f)
      • P(e);OGATE,P_SPINP(e),XP(D)::QAR1(A),XP(e)
      • R(g);N_GUARD::B(H),XS(f)
      • B(c);N_GUARD::S(C)
      • S(a);N_GUARD::S(C)
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