MESON Chess Problem Database

Problem Display
PID: 4819 (1n1R3Q/B2b3B/5N1K/5R2/2k2r1p/Pp6/1prp4/3N4 w - - 0 1)

Steinweg, Richard

Berlin Chess Association Solving Ty., 1892

1n1R3Q/B2b3B/5N1K/5R2/2k2r1p/Pp6/1prp4/3N4

#2

9 + 9

5424 Versunkene Schatze 1998

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Sxb2#
    • 1...Rd4
      • 2.Rc5#
    • 1...Ba4
      • 2.Bg8#
      • 2.Rc5#
      • 2.Qg8#
    • 1...Bb5
      • 2.Bg8#
      • 2.Rxf4#
      • 2.Rc5#
      • 2.Qg8#
    • 1...Bc6
      • 2.Rc5#
    • 1...Be6
      • 2.Rc5#
    • 1...Bc8
      • 2.Rc5#
    • 1...Be8
      • 2.Rc5#
  • Tries
    • 1.Sxb2+?
      • 1...Kc3
        • 2.Se4#
        • 2.Sd5#
      • 1...Rxb2!
    • 1.Bg8+?
      • 1...Be6
        • 2.Bxe6#
        • 2.Rc5#
      • 1...Kd3!
    • 1.Qg8+?
      • 1...Be6
        • 2.Rc5#
        • 2.Qxe6#
      • 1...Kd3!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qe2#
      • 1...Kd3
        • 2.Rxf4#
      • 1...Bxf5
        • 2.Qa4#
      • 1...Bxe8
        • 2.Rc5#
      • 1...Rc3
        • 2.Sxb2#
      • 1...Rf2
        • 2.Qe4#
      • 1...Rf3
        • 2.Qe4#
      • 1...Rd4
        • 2.Rc5#
      • 1...Re4
        • 2.Qxe4#
      • 1...Be6
        • 2.Rxf4#
        • 2.Rc5#
        • 2.Qa4#
        • 2.Qb5#
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD,SBLOCK::S(A),XP(a)
    • R(f);SBLOCK::R1(C)
    • B(h);::R1(C)
  • Tries
    • Try
      • S(A);CHECK,XP(a)
      • Refutation
        • R(b);XS(A)
    • Try
      • B(G);CHECK
      • Refutation
        • K(e);P_SPINB(h),S_FLIGHT
    • Try
      • Q(I);CHECK
      • Refutation
        • K(e);P_SPINB(h),S_FLIGHT
  • Actual
    • Q(I);
    • Threat
      • QAB(I)
    • Vars
      • K(e);P_SPINB(h),S_FLIGHT::B(G)+R(C),XR(f)
      • B(h);OGATE,XR(C)::QAR2(I)
      • B(h);XQ(I)::R1(C)
      • R(b);N_GUARD,SBLOCK::S(A),XP(a)
      • R(f);N_GUARD::QAR2(I)
      • R(f);SBLOCK::R1(C)
      • R(f);N_GUARD::QAR2(I),XR(f)
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