MESON Chess Problem Database

Problem Display
PID: 220235 (8/2N1p1Q1/3b1pK1/2R1p1p1/4k3/R2NP3/r3PP2/Bqrn4 w - - 0 1)

Ernst, Erich

Badische Neueste Nachrichten, 1997

8/2N1p1Q1/3b1pK1/2R1p1p1/4k3/R2NP3/r3PP2/Bqrn4

#2

10 + 10

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rxc4#
    • 1...Sxf2
      • 2.Sxf2#
    • 1...Sc3
      • 2.Rc4#
    • 1...Sxe3
      • 2.f3#
  • Tries
    • 1.Qxf6?
      • threat
        • 2.Qf3#
        • 2.Qf5#
      • 1...Rxe2
        • 2.Qf5#
      • 1...Sxf2
        • 2.Sxf2#
        • 2.Qf3#
      • 1...Sxe3
        • 2.Qf3#
        • 2.f3#
      • 1...g4
        • 2.Qf5#
      • 1...e6
        • 2.Qf3#
      • 1...exf6!
    • 1.Qh6?
      • threat
        • 2.Qh1#
      • 1...Sxf2
        • 2.Sxf2#
      • 1...Sxe3
        • 2.f3#
      • 1...Sc3
        • 2.Rc4#
      • 1...Sb2!
    • 1.Qh7?
      • threat
        • 2.Qh1#
      • 1...Sxf2
        • 2.Sxf2#
      • 1...Sxe3
        • 2.f3#
      • 1...Sc3
        • 2.Rc4#
      • 1...Sb2!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qh1#
      • 1...Sxf2
        • 2.Sxf2#
      • 1...Sxe3
        • 2.f3#
      • 1...Sb2
        • 2.Qa8#
      • 1...Sc3
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD::R(G),XR(b)
    • S(c);XP(C)::S(E),XS(c)
    • S(c);S_CUTR(b)::R(G)
    • S(c);SBLOCK,XP(F)::P(C)
  • Tries
    • Try
      • Q(J);XP(i)
      • Threat
        • DUALS(2)
      • Vars
        • R(d);XP(B)::QAB1(J)
        • P(g);::QAB1(J)
        • P(j);::QAB1(J)
      • Refutation
        • P(j);XQ(J)
    • Try
      • Q(J);
      • Threat
        • QAB(J)
      • Vars
        • S(c);XP(C)::S(E),XS(c)
        • S(c);SBLOCK,XP(F)::P(C)
        • S(c);S_CUTR(b)::R(G)
      • Refutation
        • S(c);
    • Try
      • Q(J);
      • Threat
        • QAB(J)
      • Vars
        • S(c);XP(C)::S(E),XS(c)
        • S(c);SBLOCK,XP(F)::P(C)
        • S(c);S_CUTR(b)::R(G)
      • Refutation
        • S(c);
  • Actual
    • Q(J);
    • Threat
      • QAB(J)
    • Vars
      • S(c);XP(C)::S(E),XS(c)
      • S(c);SBLOCK,XP(F)::P(C)
      • S(c);S_CUTQ(a)::QAB(J)
      • S(c);S_CUTR(b)::R(G)
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