MESON Chess Problem Database

Problem Display
PID: 75138 (8/8/4p2p/N1rpR2Q/N3P2K/2Pk3b/Bb2RB1n/5r2 w - - 0 1)

Maleika, Gerhard

Comm., Die Schwalbe, 2007

8/8/4p2p/N1rpR2Q/N3P2K/2Pk3b/Bb2RB1n/5r2

#2

10 + 9

23 Die Schwalbe 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Bxb1#
    • 1...Rxf2
      • 2.Bb1#
    • 1...Rxc3
      • 2.Sxb2#
    • 1...Bc1
      • 2.Bb1#
    • 1...Bxc3
      • 2.Sxc5#
    • 1...Sf3+
      • 2.Qxf3#
  • Tries
    • 1.Rxd5+?
      • 1...Rxd5
        • 2.Bc4#
      • 1...exd5!
  • Keys
    • 1.exd5!
      • threat
        • 2.R5e3#
      • 1...Rc4+
        • 2.Bxc4#
      • 1...Sf3+
        • 2.Qxf3#
      • 1...Rxc3
        • 2.Sxb2#
      • 1...Bxc3
        • 2.Sxc5#
      • 1...Bc1
        • 2.Bb1#
      • 1...Sg4
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::B(A),XR(a)
    • R(a);N_GUARD,XB(C)::B(A)
    • R(f);SBLOCK,XP(D)::S(E),XB(b)
    • B(b);S_CUTR(a)::B(A)
    • B(b);SBLOCK,XP(D)::S(E),XR(f)
    • S(c);CHECK,N_GUARD::QAR2(J),XS(c)
  • Tries
    • Try
      • R(I);CHECK,XP(g)
      • Vars
        • R(f);XR(I)::B(A)
      • Refutation
        • P(h);XR(I)
  • Actual
    • P(F);XP(g)
    • Threat
      • R1(I)
    • Vars
      • R(f);CHECK,N_GUARD::B(A),XR(f)
      • S(c);CHECK,N_GUARD::QAR2(J),XS(c)
      • R(f);SBLOCK,XP(D)::S(E),XB(b)
      • B(b);SBLOCK,XP(D)::S(E),XR(f)
      • B(b);S_CUTR(a)::B(A)
      • S(c);S_CUTB(e)::QAB(J)
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