MESON Chess Problem Database

Problem Display
PID: 164218 (3nQ3/5p2/3N1P1p/R1PkP2R/p2p4/1r1N1K2/B2b4/3n4 w - - 0 1)

Berg, Wolfgang

stern, 1997

(First published on Thu Dec 4 1997)

3nQ3/5p2/3N1P1p/R1PkP2R/p2p4/1r1N1K2/B2b4/3n4

#2

10 + 9

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.c6#
    • 1...Be1
      • 2.e6#
    • 1...Bc3
      • 2.Sf4#
      • 2.e6#
    • 1...Be3
      • 2.Sb4#
      • 2.c6#
    • 1...Bb4
      • 2.e6#
    • 1...Bf4
      • 2.c6#
    • 1...Bxa5
      • 2.e6#
    • 1...Bg5
      • 2.c6#
    • 1...Sc3
      • 2.Sb4#
    • 1...Se3
      • 2.Sf4#
    • 1...Sc6
      • 2.Qxf7#
    • 1...Se6
      • 2.Qa8#
    • 1...a3
      • 2.Bxb3#
  • Tries
    • 1.Rb5?
      • threat
        • 2.c6#
      • 1...Bb4
        • 2.e6#
      • 1...Sc3
        • 2.Sb4#
      • 1...Sc6
        • 2.Qxf7#
      • 1...Se6
        • 2.Qa8#
      • 1...Sb7!
    • 1.Qxa4?
      • threat
        • 2.Bxb3#
      • 1...Ke6
        • 2.Bxb3#
      • 1...Se3
        • 2.Sf4#
      • 1...Sb2!
  • Keys
    • 1.Rf5!
      • threat
        • 2.e6#
      • 1...Bf4
        • 2.c6#
      • 1...Se3
        • 2.Sf4#
      • 1...Sc6
        • 2.Qxf7#
      • 1...Se6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • B(b);N_GUARD::R(D)+P(E)
    • B(b);N_GUARD::R(G)+P(F)
    • B(b);N_GUARD,XR(D)::R(G)+P(F)
    • S(a);N_PINS(B)::S(B)
    • S(i);N_GUARD,SBLOCK::QAB(J),XP(h)
    • S(i);OGATE,SBLOCK::QAB(J)
    • P(d);N_GUARD::B(A),XR(c)
  • Tries
    • Try
      • R(D);
      • Threat
        • R(D)+P(E)
      • Vars
        • B(b);N_GUARD::R(G)+P(F)
        • S(a);N_PINS(B)::S(B)
        • S(i);N_GUARD,SBLOCK::QAB(J),XP(h)
        • S(i);OGATE,SBLOCK::QAB(J)
      • Refutation
        • S(i);
    • Try
      • Q(J);XP(d)
      • Threat
        • B(A),XR(c)
      • Vars
        • K(f);S_FLIGHT::B(A),XR(c)
        • S(a);N_PINS(B)::S(B)
      • Refutation
        • S(a);
  • Actual
    • R(G);
    • Threat
      • R(G)+P(F)
    • Vars
      • B(b);N_GUARD::R(D)+P(E)
      • S(a);N_PINS(B)::S(B)
      • S(i);N_GUARD,SBLOCK::QAB(J),XP(h)
      • S(i);OGATE,SBLOCK::QAB(J)
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