MESON Chess Problem Database

Problem Display
PID: 163658 (Q2b4/3rp3/3p2K1/3Bk3/2P4p/6pN/2N2pR1/5rB1 w - - 0 1)

Berg, Wolfgang

stern, 1996

(First published on Thu Jan 4 1996)

Q2b4/3rp3/3p2K1/3Bk3/2P4p/6pN/2N2pR1/5rB1

#2

8 + 9

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qxa1#
    • 1...Ba5
      • 2.Qh8#
    • 1...Bb6
      • 2.Qh8#
    • 1...Bc7
      • 2.Qh8#
    • 1...fxg1R
      • 2.Re2#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Sf3#
        • 2.Sc6#
      • 1...fxg1Q
        • 2.Sc6#
      • 1...fxg1S
        • 2.Sc6#
      • 1...fxg1B
        • 2.Sc6#
      • 1...fxg1R
        • 2.Sc6#
      • 1...Rc7
        • 2.Sf3#
      • 1...Kxd4!
    • 1.Bxf2?
      • threat
        • 2.Bd4#
      • 1...Rxf2
        • 2.Qa1#
      • 1...gxf2
        • 2.Rg5#
      • 1...Bb6
        • 2.Qh8#
      • 1...Rd1!
  • Keys
    • 1.Rxf2!
      • threat
        • 2.Re2#
      • 1...Rxf2
        • 2.Qa1#
      • 1...gxf2
        • 2.Bh2#
      • 1...Re1
        • 2.Rf5#
      • 1...Bb6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::QAB(H),XR(a)
    • B(i);OGATE::QAB(H)
    • P(b);OGATE,XB(A)::R(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);XB(A)::S(B)
        • R(g);::S(B)
      • Refutation
        • K(e);P_SPINP(b),S_FLIGHT,XS(B)
    • Try
      • B(A);XP(b)
      • Threat
        • B(A)
      • Vars
        • R(a);N_GUARD,XB(A)::QAB(H)
        • P(c);OGATE,XB(A)::R(C)
        • B(i);OGATE::QAB(H)
      • Refutation
        • R(a);
  • Actual
    • R(C);XP(b)
    • Threat
      • R(C)
    • Vars
      • R(a);N_GUARD,XR(C)::QAB(H)
      • P(c);OGATEB,XR(C)::B(A)
      • R(a);N_GUARD::R1(C)
      • B(i);OGATE::QAB(H)
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