MESON Chess Problem Database

Problem Display
PID: 176499 (3n1r2/4B3/R3PPpN/1K2k3/3pP2Q/3prp1N/5P1b/8 w - - 0 1)

Stadelmeier, Gerhard

Schach-Echo, 1984

3n1r2/4B3/R3PPpN/1K2k3/3pP2Q/3prp1N/5P1b/8

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe4
      • 2.Qg5#
    • 1...Rxf6
      • 2.Bxf6#
    • 1...Bg1
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...Sxe6
      • 2.Bd6#
  • Tries
    • 1.Bxd8?
      • threat
        • 2.Bc7#
      • 1...Rxe4
        • 2.Qg5#
      • 1...Rxd8
        • 2.Sf7#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Rf7
        • 2.Sxf7#
      • 1...g5!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Qxh2#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Rxf6
        • 2.Bd6#
      • 1...Sxe6
        • 2.Rxe6#
      • 1...Bg1
        • 2.Qg3#
      • 1...Bg3
        • 2.Qxg3#
      • 1...Bf4
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK,XP(C)::QAR2(D)
    • R(i);OGATE,XP(H)::B(J),XR(i)
    • B(a);N_GUARD::QAB1(D)
    • B(a);N_GUARD::QAB1(D),XB(a)
    • S(h);SBLOCK,XP(G)::B(J)
  • Tries
    • Try
      • B(J);XS(h)
      • Threat
        • B(J)
      • Vars
        • R(c);SBLOCK,XP(C)::QAR2(D)
        • R(i);N_GUARD,XB(J)::S(I)
        • B(a);N_GUARD::QAB1(D),XB(a)
        • R(i);N_GUARD::S(I),XR(i)
      • Refutation
        • P(g);
  • Actual
    • S(B);
    • Threat
      • QAB(D),XB(a)
    • Vars
      • R(c);OGATE,XP(C)::QAR1(D),XR(c)
      • R(i);SBLOCK,XP(H)::B(J)
      • S(h);OGATE,XP(G)::R1(F),XS(h)
      • B(a);N_GUARD::QAB(D)
      • B(a);N_GUARD::QAB(D),XB(a)
      • B(a);SBLOCK::S(I)
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