MESON Chess Problem Database

Problem Display
PID: 84369 (8/3B1b2/2pp3r/3k4/N2b1PN1/1P1pRq2/8/BK4nQ w - - 0 1)

Brown, David Leo

Los Angeles Times, 1977

8/3B1b2/2pp3r/3k4/N2b1PN1/1P1pRq2/8/BK4nQ

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qxe4#
    • 1...Bg6
      • 2.Be6#
    • 1...Se2
      • 2.Qxf3#
    • 1...Sh3
      • 2.Qxf3#
    • 1...c5
      • 2.Sb6#
  • Keys
    • 1.Rxd3!
      • threat
        • 2.Rxd4#
      • 1...Ke4
        • 2.Rxd4#
      • 1...Qe4
        • 2.Se3#
      • 1...Bg6
        • 2.Sf6#
      • 1...Se2
        • 2.Qxf3#
      • 1...c5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(c);OGATE::QAB1(C),XQ(c)
    • B(i);N_GUARD,S_CUTR(h)::B(I)
    • S(a);N_GUARD::QAB(C),XQ(c)
    • P(f);SBLOCK,S_CUTB(d)::S(F)
  • Actual
    • R(E);P_PINB(d),XP(b)
    • Threat
      • R1(E),XB(d)
    • Vars
      • K(e);N_SPINB(d),S_FLIGHT::R1(E),XB(d)
      • Q(c);P_PINR(E)::S(H)
      • B(i);P_PINR(E),S_CUTR(h)::S(H)
      • S(a);N_GUARD::QAB(C),XQ(c)
      • P(f);SBLOCK::S(F)
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