MESON Chess Problem Database

Problem Display
PID: 98882 (q1R4B/pQ1r4/5Rp1/3N1PN1/1Pnk1p2/2pn3r/b2P1P2/KB6 w - - 0 1)

Swane, Jan Arnold Willem

Problem (Zagreb), 1953

q1R4B/pQ1r4/5Rp1/3N1PN1/1Pnk1p2/2pn3r/b2P1P2/KB6

#2

12 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sde5
      • 2.Se6#
    • 1...Sce5
      • 2.dxc3#
  • Tries
    • 1.Sf3+?
      • 1...Ke4
        • 2.Sxc3#
      • 1...Rxf3!
    • 1.Re6+?
      • 1...Rxh8
        • 2.Sf3#
        • 2.Re4#
        • 2.dxc3#
      • 1...Rg7
        • 2.Re4#
        • 2.dxc3#
      • 1...Sce5
        • 2.dxc3#
      • 1...Sde5!
    • 1.Rf7+?
      • 1...Sde5
        • 2.Se6#
      • 1...Sce5
        • 2.dxc3#
      • 1...Rxh8!
  • Keys
    • 1.Se7!
      • threat
        • 2.Rd6#
      • 1...Ke5
        • 2.Re6#
      • 1...Rxh8
        • 2.Sf3#
      • 1...Rd5
        • 2.Sc6#
      • 1...Rd6
        • 2.Rxd6#
      • 1...Sde5
        • 2.Se6#
      • 1...Sce5
        • 2.dxc3#
      • 1...Sd6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::S(H)
    • S(e);SBLOCK::P(C),XP(b)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(f);P-FLIGHT,P_SPINS(c)::QAB(J)+S(F),DCHECK,XP(b)
      • Refutation
        • R(d);XS(H)
    • Try
      • R(I);CHECK
      • Vars
        • S(e);P_SPINS(e)::P(C),XP(b)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • R(I);CHECK
      • Vars
        • S(c);P_SPINS(c)::S(H)
        • S(e);P_SPINS(e)::P(C),XP(b)
      • Refutation
        • R(d);XB(L)
  • Actual
    • S(F);
    • Threat
      • B(L)+R(I),DCHECK
    • Vars
      • K(f);S_FLIGHT::B(L)+R(I),DCHECK
      • R(d);N_GUARD,XB(L)::S(H)
      • R(j);SBLOCK::S(F)
      • R(j);::B(L)+R(I),DCHECK,XR(j)
      • S(c);SBLOCK::S(H)
      • S(e);SBLOCK::P(C),XP(b)
      • S(e);::B(L)+R(I),DCHECK,XS(e)
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