MESON Chess Problem Database

Problem Display
PID: 66342 (4n1K1/1Q6/3bp3/3R1N2/1Pp1k1N1/4PpP1/3r4/3n4 w - - 0 1)

Marwitz, Jan Hendrik

Tijdschrift vd NSB, 1931

4n1K1/1Q6/3bp3/3R1N2/1Pp1k1N1/4PpP1/3r4/3n4

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Re5#
    • 1...Bxg3
      • 2.Sxg3#
    • 1...Sf6+
      • 2.Sxf6#
    • 1...Sc7
      • 2.Sf6#
      • 2.Sxd6#
    • 1...Sg7
      • 2.Sf6#
      • 2.Sxd6#
    • 1...exf5
      • 2.Rxd2#
      • 2.Rd4#
  • Keys
    • 1.Qh7!
      • threat
        • 2.Se7#
      • 1...Sf6+
        • 2.Sxf6#
      • 1...Kxd5
        • 2.Qb7#
      • 1...Rxd5
        • 2.Sxd6#
      • 1...Sxe3
        • 2.Sfxe3#
      • 1...exf5
        • 2.Qxf5#
      • 1...f2
        • 2.Qh1#
      • 1...Rh2
        • 2.Rd4#
      • 1...Be7
        • 2.Sxe7#
      • 1...Sg7
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • R(b);SBLOCK::QAB(G)+R(E),DCHECK
    • B(f);XP(B)::S(F),XB(f)
    • S(h);CHECK,N_GUARD::S(D),XS(h)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)+S(F)
    • Vars
      • S(h);CHECK,N_GUARD::S(D),XS(h)
      • K(e);OGATEB,S_FLIGHT,XR(E)::QAB(G)
      • R(b);SBLOCK,XR(E)::QAB(G)+S(F),DCHECK,XB(f)
      • S(a);XP(A)::QAB(G)+S(F),XS(a)
      • P(g);OGATE,P_SPINP(g),XS(F)::QAB1(G),XP(g)
      • P(c);OGATEB::QAB(G)
      • R(b);N_GUARD::R1(E)
      • B(f);::QAB(G)+S(F),XB(f)
      • S(h);N_GUARD::S(D)
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Developed and maintained by Brian Stephenson.
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