MESON Chess Problem Database

Problem Display
PID: 241461 (4B3/p2N3b/pB6/P2pp3/2kr4/PRpp1Q2/nP5b/2N2K2 w - - 0 1)

Hjelle, David

Sachove umeni (Ceskoslovensky sach), 1957

4B3/p2N3b/pB6/P2pp3/2kr4/PRpp1Q2/nP5b/2N2K2

#2

10 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qxd3#
    • 1...Rf4
      • 2.Sxe5#
    • 1...Bg1
      • 2.Sxe5#
    • 1...Sxc1
      • 2.Rb4#
    • 1...Sb4
      • 2.Rxb4#
  • Tries
    • 1.Rxc3+?
      • 1...Kb5
        • 2.Sc5#
        • 2.Sxe5#
        • 2.Sf6#
        • 2.Sb8#
        • 2.Sf8#
      • 1...Sxc3!
    • 1.Qf6?
      • threat
        • 2.Qc6#
      • 1...Sxc1
        • 2.Rb4#
      • 1...Sb4
        • 2.Rxb4#
      • 1...Rf4+!
    • 1.Qf8?
      • threat
        • 2.Qc5#
      • 1...Sxc1
        • 2.Rb4#
        • 2.Qb4#
      • 1...axb6
        • 2.Sxb6#
      • 1...Rf4+!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Rc5#
      • 1...Kxb5
        • 2.Sxe5#
      • 1...Sxc1
        • 2.Rb4#
      • 1...axb5
        • 2.b3#
      • 1...axb6
        • 2.Sxb6#
      • 1...Re4
        • 2.Qxd3#
      • 1...Rf4
        • 2.Sxe5#
      • 1...Rg4
        • 2.Qxd5#
      • 1...Rh4
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(f);N_GUARD,S_CUTB(k)::QAB1(F),XP(d)
    • R(f);P_PINQ(F),S_CUTB(b)::S(I),XP(h)
    • B(b);N_GUARD::S(I),XP(h)
    • S(a);N_GUARD,XS(A)::R1(E)
    • S(a);N_GUARD::R1(E),XS(a)
  • Tries
    • Try
      • R(E);CHECK,XP(c)
      • Refutation
        • S(a);XR(E)
    • Try
      • Q(F);
      • Threat
        • QAR2(F)
      • Vars
        • S(a);N_GUARD,XS(A)::R1(E)
        • S(a);N_GUARD::R1(E),XS(a)
      • Refutation
        • R(f);CHECK
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • P(j);XB(H)::S(I),XP(j)
      • Refutation
        • R(f);CHECK
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • K(e);S_FLIGHT,XR(E)::B(J)+S(I),XP(h)
      • S(a);N_GUARD,XS(A)::R1(E)
      • P(i);SBLOCK,XR(E)::P(C)
      • P(j);XB(H)::S(I),XP(j)
      • R(f);N_GUARD,S_CUTB(k)::QAB1(F),XP(d)
      • R(f);P_PINQ(F),S_CUTB(b)::S(I),XP(h)
      • R(f);N_GUARD::QAB1(F),XP(g)
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