MESON Chess Problem Database

Problem Display
PID: 64656 (7q/2P1pP1p/1N1kNP2/r2P4/B2P1n2/6R1/2r1R2B/3b3K w - - 0 1)

Maleika, Gerhard

3rd Prize, Probleemblad, 1981

7q/2P1pP1p/1N1kNP2/r2P4/B2P1n2/6R1/2r1R2B/3b3K

#2

12 + 8

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Qd8
      • 2.cxd8Q#
      • 2.cxd8R#
    • 1...Qe8
      • 2.fxe8S#
    • 1...Sg2
      • 2.Rgxg2#
    • 1...Sd3
      • 2.Rxd3#
    • 1...Sh3
      • 2.Rxh3#
    • 1...Sg6
      • 2.Rxg6#
  • Tries
    • 1.Rc3?
      • threat
        • 2.Bxf4#
      • 1...Qxf6
        • 2.c8S#
      • 1...Rxe2
        • 2.Rc6#
      • 1...Rxd5
        • 2.Sc4#
      • 1...exf6!
    • 1.Rg5?
      • threat
        • 2.Bxf4#
      • 1...Qxf6
        • 2.Sc8#
      • 1...Rxe2
        • 2.Sc4#
      • 1...Rxd5
        • 2.Rxd5#
      • 1...exf6!
  • Keys
    • 1.Rg8!
      • threat
        • 2.Bxf4#
      • 1...Qxf6
        • 2.Rd8#
      • 1...Rxe2
        • 2.c8S#
      • 1...Rxd5
        • 2.Sc8#
      • 1...exf6
        • 2.f8Q#
        • 2.f8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(h);OGATE::PXQ(h)=Q
    • Q(h);OGATE::PXQ(h)=S
    • S(c);OGATEB::B(C)+R(D),XS(c)
  • Tries
    • Try
      • R(D);P_PINS(c)
      • Threat
        • B(C),XS(c)
      • Vars
        • Q(h);N_GUARD,XP(J)::P=S
        • R(b);N_GUARD,XR(B)::R1(D)
        • R(d);SBLOCK,XP(G)::S(H)
      • Refutation
        • P(f);XP(J)
    • Try
      • R(D);P_PINS(c)
      • Threat
        • B(C),XS(c)
      • Vars
        • Q(h);N_GUARD,XP(J)::S(H)
        • R(b);N_GUARD,XR(B)::S(H)
        • R(d);OGATE,XP(G)::R1(D),XR(d)
      • Refutation
        • P(f);XP(J)
  • Actual
    • R(D);P_PINS(c)
    • Threat
      • B(C),XS(c)
    • Vars
      • Q(h);N_GUARD,XP(J)::R(D)
      • R(b);N_GUARD,XR(B)::P=S
      • R(d);SBLOCK,XP(G)::S(H)
      • P(f);XP(J)::P=Q
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