MESON Chess Problem Database

Problem Display
PID: 121708 (4K3/n1R3p1/2p1N3/r1nk2r1/B1b5/2R2PBQ/4N3/8 w - - 0 1)

Stocchi, Ottavio

Banyai MT, 1949-1951

4K3/n1R3p1/2p1N3/r1nk2r1/B1b5/2R2PBQ/4N3/8

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Qxf5#
    • 1...Rg6
      • 2.Qf5#
    • 1...Bb5
      • 2.Rxc5#
    • 1...Sb3
      • 2.Rd7#
    • 1...Sd3
      • 2.Rd7#
    • 1...Sxa4
      • 2.Rd7#
    • 1...Sa6
      • 2.Rd7#
    • 1...Sd7
      • 2.Rxd7#
    • 1...Sc8
      • 2.Bxc6#
  • Tries
    • 1.Rd3+?
      • 1...Sxd3
        • 2.Sc3#
        • 2.Rd7#
      • 1...Bxd3!
  • Keys
    • 1.Rxc6!
      • threat
        • 2.Sc7#
        • 2.Rd6#
      • 1...Rxa4
        • 2.Rxc5#
        • 2.Rd6#
      • 1...Rxg3
        • 2.Qf5#
      • 1...Bxe2
        • 2.Rd6#
      • 1...Sxa4
        • 2.Rd6#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Sxc6
        • 2.Sc7#
      • 1...Rb5
        • 2.Rd6#
      • 1...Bb5
        • 2.Rxc5#
      • 1...Sb5
        • 2.Rxc5#
      • 1...Ra6
        • 2.Sc7#
        • 2.Rxc5#
      • 1...Re5
        • 2.Sf4#
      • 1...Se4
        • 2.Sc7#
      • 1...Sa6
        • 2.Rd6#
      • 1...Sb7
        • 2.Sc7#
      • 1...Sc8
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 9
    • REMOVED MATES = 5
  • Sets
    • R(e);N_GUARD::QAR2(E),XR(e)
    • R(e);N_GUARD::QAR2(E)
    • B(a);OGATE::R1(B),XS(c)
    • S(c);N_GUARD::R(H)
    • S(c);N_GUARD,XB(F)::R(H)
    • S(c);N_GUARD::R(H),XS(c)
    • S(g);N_GUARD::B(F),XP(f)
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • B(a);XR(B)
  • Actual
    • R(H);XP(f)
    • Threat
      • DUALS(2)
    • Vars
      • R(e);N_GUARD,XB(D)::QAR2(E)
      • B(a);XS(A)::R1(H)
      • S(c);XB(F)::R1(H)
      • S(c);OGATE,XS(G)::QAB1(E),XS(c)
      • S(g);XR(H)::S(G)
      • R(b);::R1(H)
      • B(a);OGATE,P_PINR(H)::R1(B),XS(c)
      • S(g);S_CUTR(b)::R1(H),XS(c)
      • R(e);P_PINS(G),SBLOCK::S(A)
      • S(c);::S(G)
      • S(c);::R1(H)
      • S(g);::S(G)
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