MESON Chess Problem Database

Problem Display
PID: 134685 (N7/1R2Q3/5p2/r2np2K/1PknPp2/1p2PN2/1p2P3/4BB2 w - - 0 1)

Labai, Zoltan

Taraba, Jozef

2nd HM., Sachove umeni (Ceskoslovensky sach), 2002

N7/1R2Q3/5p2/r2np2K/1PknPp2/1p2PN2/1p2P3/4BB2

#2

11 + 9

14580 Chess Compositions (Taraba) 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qc5#
    • 1...Ra2
      • 2.Qc5#
    • 1...Ra3
      • 2.Qc5#
    • 1...Ra4
      • 2.Qc5#
    • 1...Rc5
      • 2.Qxc5#
    • 1...Ra6
      • 2.Qc5#
    • 1...Ra7
      • 2.Qc5#
    • 1...Rxa8
      • 2.Qc5#
    • 1...Sxe2
      • 2.Bxe2#
    • 1...Sxf3
      • 2.exf3#
    • 1...Sb5
      • 2.Qc5#
    • 1...Sc3
      • 2.Sd2#
    • 1...Sxb4
      • 2.Rxb4#
      • 2.Qxb4#
    • 1...f5
      • 2.Sxe5#
  • Keys
    • 1.Qxe5!
      • threat
        • 2.Qxd4#
      • 1...Sxe2
        • 2.Bxe2#
        • 2.Qd4#
      • 1...Sxf3
        • 2.exf3#
      • 1...Sxe3
        • 2.Sb6#
      • 1...Sxb4
        • 2.Sb6#
        • 2.Rxb4#
      • 1...fxe5
        • 2.Sxe5#
      • 1...Sc2
        • 2.Sd2#
      • 1...Sb5
        • 2.Qxd5#
      • 1...Sf5
        • 2.Sd2#
      • 1...Sc6
        • 2.Sd2#
      • 1...Se6
        • 2.Sd2#
      • 1...Sc3
        • 2.Sd2#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Sc7
        • 2.Sb6#
      • 1...Se7
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 10
  • Sets
    • R(f);N_GUARD::QAR1(J)
    • R(f);N_GUARD::QAR1(J),XR(f)
    • R(f);N_GUARD,XS(K)::QAR1(J)
    • S(d);OGATE,P_SPINS(d),XP(C)::B(B),XS(d)
    • S(d);OGATE,XS(E)::B(B)+P(C),XS(d)
    • S(d);S_CUTR(f)::QAR1(J)
    • S(g);SBLOCK::S(E)
    • P(i);N_GUARD::S(E),XP(h)
  • Actual
    • Q(J);XP(h)
    • Threat
      • QAR1(J),XS(d)
    • Vars
      • S(d);OGATE,XS(E)::B(B)+P(C),XS(d)
      • S(g);N_GUARD,P_PINQ(J),XP(D)::S(K)
      • P(i);XQ(J)::S(E),XP(i)
      • S(d);::S(E)
      • S(d);S_CUTR(f)::QAB1(J),XS(g)
      • S(g);P_PINQ(J),SBLOCK::S(E)
      • S(g);N_GUARD,P_PINQ(J)::S(K),XS(g)
      • S(g);N_GUARD,P_PINQ(J)::S(K)
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