MESON Chess Problem Database

Problem Display
PID: 232191 (7B/2p3rr/1p2R3/Rb4Qn/1P1kBp2/3P4/1n1P4/6K1 w - - 0 1)

Berg, Wolfgang

Freie Presse, 1997

7B/2p3rr/1p2R3/Rb4Qn/1P1kBp2/3P4/1n1P4/6K1

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.Rd5#
    • 1...Ba6
      • 2.Rd5#
    • 1...Bd7
      • 2.Rd5#
    • 1...Be8
      • 2.Rd5#
    • 1...Sg3
      • 2.Qf6#
      • 2.Qd5#
      • 2.Qe5#
    • 1...c5
      • 2.Rd6#
    • 1...c6
      • 2.Rd6#
  • Tries
    • 1.Bg6?
      • threat
        • 2.Qe5#
      • 1...Bxd3
        • 2.Qd5#
      • 1...Sxd3
        • 2.Re4#
      • 1...Sc4!
    • 1.Bxg7+?
      • 1...Sf6
        • 2.Bxf6#
        • 2.Qxf6#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Sxg7
        • 2.Qf6#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Rxg7!
  • Keys
    • 1.Rg6!
      • threat
        • 2.Qd5#
      • 1...Bc4
        • 2.Qe5#
      • 1...Bc6
        • 2.Qe5#
      • 1...Sf6
        • 2.Qxf6#
      • 1...c6
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • B(d);OGATE::R1(F)
    • P(g);N_GUARD::R(H)
  • Tries
    • Try
      • B(E);N_SPINQ(G)
      • Threat
        • QAB1(G)
      • Vars
        • B(d);XP(C)::QAR1(G)
        • S(a);SBLOCK,XP(C)::R1(H)
      • Refutation
        • S(a);
    • Try
      • B(I);CHECK,N_SPINQ(G),XR(h)
      • Refutation
        • R(i);P_PINQ(G),XB(I)
  • Actual
    • R(H);N_SPINQ(G)
    • Threat
      • QAR1(G)
    • Vars
      • B(d);::QAB1(G)
      • S(e);N_GUARD,N_SPINR(h)::QAB(G),XS(e)
      • P(g);N_GUARD::R(H)
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