MESON Chess Problem Database

Problem Display
PID: 135665 (3bn3/K2N1PrN/1pbk1r2/2Rpp1B1/1P6/5nQB/4R3/8 w - - 0 1)

Ancin, Andrej

Magyar Sakkvilag, 1940

3bn3/K2N1PrN/1pbk1r2/2Rpp1B1/1P6/5nQB/4R3/8

#2

10 + 10

14649 Andrej Ancin - Chess Compositions 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Ke7
      • 2.f8Q#
    • 1...Rf4
      • 2.fxe8S#
    • 1...Rfg6
      • 2.fxe8S#
    • 1...Rh6
      • 2.fxe8S#
    • 1...Be7
      • 2.fxe8S#
    • 1...Se1
      • 2.Qxe5#
    • 1...Sg1
      • 2.Qxe5#
    • 1...Sd2
      • 2.Qxe5#
    • 1...Sh2
      • 2.Qxe5#
    • 1...Sd4
      • 2.Qxe5#
    • 1...Sh4
      • 2.Qxe5#
    • 1...Sxg5
      • 2.Qxe5#
  • Tries
    • 1.Rxc6+?
      • 1...Ke7
        • 2.f8Q#
      • 1...Kxc6!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Sc4#
      • 1...Rfxf7+
        • 2.Sxf7#
      • 1...Rgxf7+
        • 2.Sxf7#
      • 1...Kc7
        • 2.fxe8S#
      • 1...Ke7
        • 2.f8Q#
        • 2.f8B#
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Rf4
        • 2.Rxc6#
      • 1...Rf5
        • 2.Rxc6#
      • 1...Re6
        • 2.Rxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 11
  • Sets
    • K(f);P_SPINR(g),S_FLIGHT::P=Q
    • R(g);N_SPINP(c)::PXS(j)=S
    • R(g);::PXS(j)=S
    • B(i);SBLOCK::PXS(j)=S
    • S(a);N_GUARD::QAB1(B),XP(c)
    • S(a);N_GUARD,XB(F)::QAB1(B),XP(c)
  • Tries
    • Try
      • R(E);CHECK,XB(e)
      • Vars
        • K(f);P_SPINR(g),S_FLIGHT::P=Q
      • Refutation
        • K(f);N_SPINP(c),P-FLIGHT,XR(E)
  • Actual
    • S(H);P_SPINP(I),XP(c)
    • Threat
      • QAB(B)+S(H),DCHECK
    • Vars
      • R(g);CHECK,XP(I)::QAB(B)+S(H),DCHECK,XR(g)
      • R(h);CHECK,XP(I)::QAB(B)+S(H),DCHECK,XR(h)
      • K(f);N_PINP(I),P_SPINB(e),S_FLIGHT::PXS(j)=S
      • K(f);N_PINP(I),P_SPINR(g),S_FLIGHT::P=Q
      • S(a);OGATE,P_SPINS(a),XS(H)::QAB1(B),XS(a)
      • R(g);::R1(E),XB(e)
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