MESON Chess Problem Database

Problem Display
PID: 39092 (8/5K2/b1p5/R1bk4/1n4R1/nrp5/B2qP2B/1NrQN3 w - - 0 1)

Visserman, Eeltje

4th Comm., Die Schwalbe, 1953/II

8/5K2/b1p5/R1bk4/1n4R1/nrp5/B2qP2B/1NrQN3

#2

9 + 10

136 Problem Observer 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Rxd4#
      • 2.Qxd4#
    • 1...Sac2
      • 2.Sxc3#
    • 1...Sb5
      • 2.Bxb3#
      • 2.Qxb3#
    • 1...Sbc2
      • 2.Sxc3#
    • 1...c2
      • 2.Sc3#
  • Keys
    • 1.Sc2!
      • threat
        • 2.Sxc3#
        • 2.Se3#
        • 2.Sxb4#
      • 1...Rxb1
        • 2.Se3#
        • 2.Sxb4#
      • 1...Rxd1
        • 2.Sxb4#
      • 1...Rxc2
        • 2.Qh1#
      • 1...Sxb1
        • 2.Se3#
        • 2.Sxb4#
      • 1...Saxc2
        • 2.Sxc3#
      • 1...Sxa2
        • 2.Se3#
      • 1...Sbxc2
        • 2.Sxc3#
      • 1...Qd4
        • 2.Se3#
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Bd3
        • 2.Sxb4#
        • 2.Rd4#
      • 1...Bc4
        • 2.Se3#
        • 2.e4#
      • 1...Bb5
        • 2.Sxc3#
      • 1...Sc4
        • 2.e4#
      • 1...Sb5
        • 2.Bxb3#
      • 1...Sd3
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • S(c);S_CUTR(a)::S(A),XP(e)
    • S(f);S_CUTR(a)::S(A),XP(e)
    • P(e);S_CUTR(a)::S(A)
  • Actual
    • S(C);
    • Threat
      • DUALS(3)
    • Vars
      • R(a);N_SPINQ(b),XQ(B)::S(C),XS(f)
      • R(a);N_GUARD,XS(C)::QAB(B)
      • S(c);XS(C)::S(A),XP(e)
      • S(f);N_SPINR(d),XB(D)::S(C)
      • S(f);XS(C)::S(A),XP(e)
      • B(i);N_SPINB(g)::S(A),XP(e)
      • S(c);N_SPINR(d),SBLOCK::P(E)
      • S(c);N_GUARD,N_SPINB(g),S_CUTB(i)::B(D),XR(d)
      • S(f);N_SPINQ(b),S_CUTQ(b)::R1(G)
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