MESON Chess Problem Database

Problem Display
PID: 172035 (1b1N1R2/4B3/2p1B1p1/2pbk1n1/4P3/K2p2P1/P2N1Q2/5r2 w - - 0 1)

Apro, Laszlo

2nd Comm., Budapesti Sakkszovetseg, 1962

1b1N1R2/4B3/2p1B1p1/2pbk1n1/4P3/K2p2P1/P2N1Q2/5r2

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qf6#
    • 1...Rb1
      • 2.Qf6#
    • 1...Rc1
      • 2.Qf6#
    • 1...Rd1
      • 2.Qf6#
    • 1...Re1
      • 2.Qf6#
    • 1...Rg1
      • 2.Qf6#
    • 1...Rh1
      • 2.Qf6#
    • 1...Bxe4
      • 2.Sc4#
    • 1...Bxe6
      • 2.Sxc6#
    • 1...Bd6
      • 2.Bf6#
    • 1...Sxe4
      • 2.Sf3#
    • 1...Sxe6
      • 2.Sf7#
  • Tries
    • 1.Sc4+?
      • 1...Kxe4
        • 2.Qe3#
      • 1...Bxc4!
  • Keys
    • 1.Qxc5!
      • threat
        • 2.Qc3#
      • 1...Sxe4
        • 2.Sc4#
      • 1...Sxe6
        • 2.Sxc6#
      • 1...Rc1
        • 2.Bf6#
      • 1...Bd6
        • 2.Bxd6#
      • 1...Ba7
        • 2.Bd6#
      • 1...Sf3
        • 2.Bf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD,P_PINP(A)::QAB1(C)
    • R(a);N_GUARD::QAB1(C)
    • B(d);N_GUARD,SBLOCK,XP(F)::S(B)
    • B(d);N_GUARD,SBLOCK,XB(G)::S(I),XP(g)
    • B(i);SBLOCK::B(H)
    • S(f);N_GUARD,SBLOCK,XP(F)::S(B)
    • S(f);N_GUARD,SBLOCK,XB(G)::S(I)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(F)::QAR1(C)
      • Refutation
        • B(d);XS(B)
  • Actual
    • Q(C);P_PINB(d),XP(c)
    • Threat
      • QAB(C)
    • Vars
      • S(f);SBLOCK,XP(F)::S(B)
      • S(f);SBLOCK,XB(G)::S(I),XP(g)
      • R(a);N_GUARD::B(H)
      • B(i);N_GUARD,P_PINQ(C)::B(H),XB(i)
      • B(i);N_GUARD::B(H)
      • S(f);S_CUTR(a)::B(H)
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Developed and maintained by Brian Stephenson.
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