MESON Chess Problem Database

Problem Display
PID: 157252 (2b4q/K2P4/pPk5/3R3p/1P2N1r1/bBp2n1Q/2n5/2R5 w - - 0 1)

Bakcsi, Gyorgy

Magyar Sakkelet, 1958

2b4q/K2P4/pPk5/3R3p/1P2N1r1/bBp2n1Q/2n5/2R5

#2

9 + 10

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.dxc8Q#
      • 2.dxc8R#
      • 2.d8S#
    • 1...Qe5
      • 2.d8S#
    • 1...Qf6
      • 2.dxc8Q#
      • 2.dxc8R#
    • 1...Qh6
      • 2.dxc8Q#
      • 2.dxc8R#
      • 2.d8S#
    • 1...Rg1
      • 2.Rc5#
      • 2.Qe6#
    • 1...Rg2
      • 2.Rc5#
      • 2.Qe6#
    • 1...Rg3
      • 2.Rc5#
      • 2.Qe6#
    • 1...Rf4
      • 2.Rc5#
      • 2.Qe6#
    • 1...Rh4
      • 2.Rc5#
      • 2.Qe6#
    • 1...Rg5
      • 2.Qe6#
    • 1...Rg6
      • 2.Rc5#
    • 1...Rg7
      • 2.Rc5#
      • 2.Qe6#
    • 1...Rg8
      • 2.Rc5#
      • 2.Qe6#
    • 1...Bxd7
      • 2.Rc5#
    • 1...Scd4
      • 2.Rxc3#
    • 1...Sfd4
      • 2.Qxc3#
    • 1...a5
      • 2.b5#
  • Keys
    • 1.Sf6!
      • threat
        • 2.Ba4#
      • 1...Qxf6
        • 2.dxc8Q#
        • 2.dxc8R#
      • 1...Rxb4
        • 2.Qe6#
      • 1...Scd4
        • 2.Rxc3#
      • 1...Sfd4
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(j);N_GUARD::P=S
    • Q(j);N_GUARD::PXB(i)=Q
    • R(e);OGATE::QAR2(C)
    • R(e);::R1(F)
    • B(i);SBLOCK,XP(I)::R1(F)
    • S(a);OGATE,P_SPINP(c)::R(A),XP(c)
    • S(d);OGATE::QAR(C),XP(c)
    • P(g);N_GUARD::P(D)
  • Actual
    • S(E);
    • Threat
      • B(B)
    • Vars
      • Q(j);N_GUARD,XS(E)::PXB(i)=Q
      • R(e);OGATE,XP(D)::QAR2(C)
      • S(a);OGATE,P_SPINP(c)::R(A),XP(c)
      • S(d);OGATE::QAR(C),XP(c)
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