MESON Chess Problem Database

Problem Display
PID: 269992 (3R1r2/1KP2PP1/2P2k1P/2B3NB/3n3P/5N2/1R2P3/Q7 w - - 0 1)

Chicco, Adriano

4th Prize, Problem 046. TT, 1966

3R1r2/1KP2PP1/2P2k1P/2B3NB/3n3P/5N2/1R2P3/Q7

#2

15 + 3

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Se4+?
      • 1...Ke6
        • 2.c8Q#
        • 2.c8B#
      • 1...Kf5!
    • 1.Sh7+?
      • 1...Ke6
        • 2.c8Q#
        • 2.c8B#
      • 1...Kf5!
    • 1.Bxd4+?
      • 1...Ke7
        • 2.Rd7#
        • 2.Qa3#
        • 2.gxf8Q#
        • 2.gxf8B#
      • 1...Kf5!
    • 1.c8Q?
      • threat
        • 2.Se4#
        • 2.Sh7#
      • 1...Sxf3
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Re8
        • 2.Sh7#
        • 2.fxe8S#
      • 1...Rh8
        • 2.Se4#
        • 2.gxh8Q#
        • 2.gxh8B#
      • 1...Rxf7+!
  • Keys
    • 1.e4!
      • 1...Rxf7
        • 2.g8S#
      • 1...Rxd8
        • 2.cxd8Q#
        • 2.cxd8B#
      • 1...Sxf3
        • 2.Rf2#
      • 1...Sxc6
        • 2.Rb6#
      • 1...Re8
        • 2.fxe8S#
      • 1...Rg8
        • 2.fxg8S#
      • 1...Rh8
        • 2.gxh8Q#
        • 2.gxh8B#
      • 1...Sc2
        • 2.Rxc2#
      • 1...Se2
        • 2.Rxe2#
      • 1...Sb3
        • 2.Rxb3#
      • 1...Sb5
        • 2.Rxb5#
      • 1...Sf5
        • 2.e5#
      • 1...Se6
        • 2.Sh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(b);P-FLIGHT::P=Q
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(b);P-FLIGHT::P=Q
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(F);CHECK,XS(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • P(L);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD,XS(D)::QAR1(L)
        • S(a);N_GUARD::QAR1(L),XS(a)
      • Refutation
        • R(c);CHECK,XP(M)
  • Actual
    • P(C);
    • Vars
      • R(c);N_GUARD,P_PINP(L),XP(M)::P=S
      • R(c);OGATE,XR(O)::PXR(c)=Q
      • S(a);OGATEB,XS(D)::QAB(A)+R(B)
      • S(a);OGATEB,XP(I)::QAB(A)+R(B)
      • R(c);OGATE::PXR(c)=S
      • R(c);OGATE::PXR(c)=Q
      • S(a);OGATEB::QAB(A)+R(B),XS(a)
      • S(a);SBLOCK::P(C)
      • S(a);SBLOCK::S(G)
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