MESON Chess Problem Database

Problem Display
PID: 135458 (2r1BRQ1/2pb1PP1/Nr1Pk1n1/1pP3B1/n3P3/5N2/2K3p1/3R4 w - - 0 1)

Groth, Reinhard

Troll, 2009

2r1BRQ1/2pb1PP1/Nr1Pk1n1/1pP3B1/n3P3/5N2/2K3p1/3R4

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Sxc7#
    • 1...Rb8
      • 2.Sxc7#
    • 1...Rd8
      • 2.Sxc7#
    • 1...Rxe8
      • 2.Sxc7#
      • 2.fxe8Q#
      • 2.fxe8S#
      • 2.fxe8B#
      • 2.fxe8R#
    • 1...Bxe8
      • 2.fxe8Q#
      • 2.fxe8B#
    • 1...Sxc5
      • 2.Sxc5#
    • 1...Se5
      • 2.Sd4#
    • 1...Sxf8
      • 2.gxf8S#
  • Keys
    • 1.dxc7!
      • threat
        • 2.Bxd7#
      • 1...Rxc7
        • 2.Sxc7#
      • 1...Rxe8
        • 2.fxe8Q#
        • 2.fxe8S#
        • 2.fxe8B#
        • 2.fxe8R#
      • 1...Bxe8
        • 2.fxe8Q#
        • 2.fxe8S#
        • 2.fxe8B#
        • 2.fxe8R#
      • 1...Sxc5
        • 2.Sxc5#
      • 1...Sxf8
        • 2.gxf8S#
      • 1...Rd6
        • 2.Rxd6#
      • 1...Rd8
        • 2.cxd8S#
      • 1...Bc6
        • 2.Rd6#
      • 1...Se5
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(i);N_GUARD::S(G),XP(g)
    • B(h);OGATE,XB(K)::PXB(h)=Q
    • S(b);XP(E)::S(G),XS(b)
    • S(f);SBLOCK::S(C)
    • S(f);OGATE,XR(L)::PXS(f)=S
  • Actual
    • P(H);XP(g)
    • Threat
      • B(K),XB(h)
    • Vars
      • R(i);P_PINP(E),XP(H)::S(G),XR(i)
      • S(b);XP(E)::S(G),XS(b)
      • S(f);OGATE,XR(L)::PXS(f)=S
      • R(d);N_GUARD::R1(A),XR(d)
      • R(i);OGATE::PXR(i)=S
      • B(h);S_CUTR(d)::R1(A)
      • S(f);SBLOCK::S(C)
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Developed and maintained by Brian Stephenson.
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