MESON Chess Problem Database

Problem Display
PID: 266893 (8/2pQp1P1/2KnP3/p4p2/Rb1k1P2/N1ppprN1/3nb3/B2R3B w - - 0 1)

Castellari, Umberto

Manzone, Domenico

Comm., Die Schwalbe, 1957

8/2pQp1P1/2KnP3/p4p2/Rb1k1P2/N1ppprN1/3nb3/B2R3B

#2

11 + 13

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Sxf5#
    • 1...Rf2
      • 2.Sxf5#
    • 1...Sc4
      • 2.Sc2#
      • 2.Sb5#
    • 1...Se4
      • 2.Sxe2#
      • 2.Sxf5#
  • Tries
    • 1.Rc1?
      • threat
        • 2.Bxc3#
      • 1...Sc4
        • 2.Sb5#
      • 1...Se4
        • 2.Sxf5#
      • 1...Sb1!
    • 1.Rxb4+?
      • 1...Sc4
        • 2.Sc2#
        • 2.Sb5#
        • 2.Rxc4#
      • 1...axb4!
    • 1.g8Q?
      • threat
        • 2.Qg7#
        • 2.Qh8#
      • 1...Sc4
        • 2.Sc2#
        • 2.Sb5#
      • 1...Se4
        • 2.Sxe2#
        • 2.Sxf5#
      • 1...Rxg3!
  • Keys
    • 1.Qxe7!
      • threat
        • 2.Qf6#
      • 1...S2c4
        • 2.Sc2#
      • 1...S2e4
        • 2.Sxe2#
      • 1...S6c4
        • 2.Sb5#
      • 1...S6e4
        • 2.Sxf5#
      • 1...Sf7
        • 2.Qc5#
      • 1...Se8
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(f);::S(E),XP(j)
  • Tries
    • Try
      • R(B);
      • Threat
        • B(A),XP(c)
      • Vars
        • S(a);N_SPINB(g),SBLOCK::S(D)
        • S(a);SBLOCK::S(E),XP(j)
      • Refutation
        • S(a);
    • Try
      • R(F);CHECK,XB(g)
      • Refutation
        • P(i);XR(F)
    • Try
      • P(K);
      • Threat
        • DUALS(2)
      • Refutation
        • R(f);XS(E)
  • Actual
    • Q(J);N_PINS(k),XP(m)
    • Threat
      • QAB(J)
    • Vars
      • S(a);N_SPINB(g),SBLOCK,S_CUTP(d)::S(D)
      • S(a);SBLOCK,S_CUTP(d)::S(E),XB(b)
      • S(k);N_GUARD,N_SPINB(g),SBLOCK::S(D)
      • S(k);N_GUARD,SBLOCK::S(E),XP(j)
      • S(k);OGATE::QAB1(J)
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