MESON Chess Problem Database

Problem Display
PID: 54745 (b3R3/1B2n3/2PP1pn1/1R3p2/Q1NPkp2/3N3r/KB1PP2r/8 w - - 0 1)

Hoffmann, Fritz

Die Schwalbe, 2003

b3R3/1B2n3/2PP1pn1/1R3p2/Q1NPkp2/3N3r/KB1PP2r/8

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Sf2#
    • 1...Rf2
      • 2.Sxf2#
    • 1...Sh4
      • 2.Rxe7#
    • 1...Sh8
      • 2.Rxe7#
  • Tries
    • 1.Se3?
      • threat
        • 2.Sc5#
        • 2.d5#
      • 1...Rxe3
        • 2.d5#
      • 1...fxe3
        • 2.d5#
      • 1...Se5
        • 2.Sc5#
        • 2.dxe5#
      • 1...f3
        • 2.d5#
      • 1...Rxe2!
    • 1.d5?
      • threat
        • 2.Sa3#
        • 2.Se3#
        • 2.Sa5#
        • 2.Sce5#
        • 2.Sb6#
      • 1...Rxe2
        • 2.Sce5#
      • 1...Se5
        • 2.Scxe5#
      • 1...Re3
        • 2.Sa3#
        • 2.Sxe3#
        • 2.Sa5#
        • 2.Sce5#
        • 2.Sb6#
      • 1...Rxd3!
  • Keys
    • 1.Sce5!
      • threat
        • 2.d5#
      • 1...Rxd3
        • 2.exd3#
      • 1...Sxe5
        • 2.dxe5#
      • 1...Sxc6
        • 2.Sxg6#
      • 1...Sd5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::S(E)
    • R(a);N_GUARD::S(E),XR(a)
    • S(g);N_GUARD::R(M),XS(h)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XS(G)::QAR(F)+P(H)
        • P(d);XS(G)::QAR(F)+P(H)
        • P(d);::QAR(F)+P(H)
      • Refutation
        • R(a);XP(D)
    • Try
      • P(H);
      • Threat
        • DUALS(5)
      • Vars
        • R(a);XP(D)::QAR(F)+S(G)
        • S(g);N_SPINS(h)::QAR(F)+S(G),XS(g)
      • Refutation
        • R(b);XS(E)
  • Actual
    • S(G);N_PINS(h)
    • Threat
      • QAR(F)+P(H)
    • Vars
      • R(b);OGATE,XS(E)::P(D),XR(b)
      • S(g);OGATE,XS(G)::QAR(F)+P(H),XS(g)
      • S(h);P_SPINS(h),XP(J)::R(M)+S(G),XS(g)
      • S(h);SBLOCK::S(E)
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