MESON Chess Problem Database

Problem Display
PID: 243094 (r3R3/R1P1Pk1K/6n1/B2P2bN/B5N1/8/8/8 w - - 0 1)

Armeni, Alberto

idee & form, 1991

r3R3/R1P1Pk1K/6n1/B2P2bN/B5N1/8/8/8

#2

10 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.cxd8S#
    • 1...Bh4
      • 2.Sh6#
    • 1...Bf6
      • 2.Sh6#
    • 1...Bh6
      • 2.Sxh6#
    • 1...Bxe7
      • 2.Sh6#
    • 1...Sf4
      • 2.Se5#
    • 1...Sh4
      • 2.Se5#
    • 1...Se5
      • 2.Sxe5#
    • 1...Sxe7
      • 2.Se5#
    • 1...Sf8+
      • 2.exf8Q#
      • 2.exf8R#
    • 1...Sh8
      • 2.Se5#
  • Tries
    • 1.Rexa8?
      • threat
        • 2.e8Q#
      • 1...Sf8+
        • 2.exf8Q#
      • 1...Bxe7
        • 2.Sh6#
      • 1...Sxe7
        • 2.Se5#
      • 1...Kxe7!
    • 1.c8Q?
      • threat
        • 2.Qe6#
      • 1...Sf8+
        • 2.Rxf8#
        • 2.exf8Q#
        • 2.exf8R#
      • 1...Sf4
        • 2.Se5#
        • 2.Rf8#
      • 1...Rxc8!
    • 1.c8B?
      • threat
        • 2.Be6#
      • 1...Sf8+
        • 2.Rxf8#
        • 2.exf8Q#
        • 2.exf8R#
      • 1...Sf4
        • 2.Se5#
        • 2.Rf8#
      • 1...Rxc8!
  • Keys
    • 1.Rd8!
      • threat
        • 2.e8Q#
      • 1...Sf8+
        • 2.exf8Q#
      • 1...Kxe7
        • 2.c8S#
      • 1...Rxd8
        • 2.cxd8S#
      • 1...Bxe7
        • 2.Sh6#
      • 1...Sxe7
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(d);OGATE::PXR(d)=S
    • B(a);N_GUARD::S(B)
    • B(a);N_GUARD::S(B),XB(a)
    • B(a);N_GUARD,XP(H)::S(B)
    • S(b);N_GUARD::S(B)
    • S(b);N_GUARD::S(B),XS(b)
    • S(b);N_GUARD,XP(H)::S(B)
    • S(b);CHECK,OGATE::PXS(b)=Q
  • Tries
    • Try
      • R(J);XR(d)
      • Threat
        • P=Q
      • Vars
        • S(b);CHECK,OGATE::PXS(b)=Q
        • B(a);N_GUARD,SBLOCK,XP(H)::S(B)
        • S(b);N_GUARD,SBLOCK,XP(H)::S(B)
      • Refutation
        • K(c);P-FLIGHT,XP(H)
    • Try
      • P(G);
      • Threat
        • QAB1(G)
      • Refutation
        • R(d);XQ(G)
    • Try
      • P(G);
      • Threat
        • B(G)
      • Refutation
        • R(d);XB(G)
  • Actual
    • R(J);
    • Threat
      • P=Q
    • Vars
      • S(b);CHECK,OGATE::PXS(b)=Q
      • K(c);P-FLIGHT,XP(H)::P=S
      • R(d);OGATE,XR(J)::PXR(d)=S
      • B(a);N_GUARD,SBLOCK,XP(H)::S(B)
      • S(b);N_GUARD,SBLOCK,XP(H)::S(B)
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