MESON Chess Problem Database

Problem Display
PID: 198718 (4nn2/8/1PpR3N/3rk3/1P1pN2Q/3p2p1/3K1P1b/8 w - - 0 1)

Ghersi, A

4th HM., L'Illustrazione Italiana, 1921

4nn2/8/1PpR3N/3rk3/1P1pN2Q/3p2p1/3K1P1b/8

#2

8 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qxg3+?
      • 1...Kxe4
        • 2.f3#
      • 1...Bxg3!
    • 1.Qf6+?
      • 1...Kxe4
        • 2.f3#
      • 1...Sxf6!
    • 1.Qg4?
      • threat
        • 2.Sf7#
        • 2.Qf5#
      • 1...Rxd6
        • 2.Qf5#
      • 1...Sg7
        • 2.Sf7#
      • 1...Sxd6!
  • Keys
    • 1.Sc5!
      • 1...Kxd6
        • 2.Sf7#
      • 1...Rxc5
        • 2.Qxd4#
      • 1...Rxd6
        • 2.Qg5#
      • 1...Sxd6
        • 2.f4#
      • 1...gxf2
        • 2.Qxh2#
      • 1...Bg1
        • 2.Qxg3#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sc7
        • 2.Qf6#
      • 1...Sg7
        • 2.Qf6#
      • 1...Se6
        • 2.Rxe6#
      • 1...Sg6
        • 2.Re6#
      • 1...Sd7
        • 2.Re6#
      • 1...Sh7
        • 2.Re6#
      • 1...g2
        • 2.Qxh2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK,XP(c)
      • Vars
        • K(f);P-FLIGHT,XS(D)::P(B)
      • Refutation
        • B(a);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(f);P-FLIGHT,XS(D)::P(B)
      • Refutation
        • S(h);XQ(E)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);XR(G)::QAR1(E)
        • S(h);::S(H)
      • Refutation
        • S(h);XR(G)
  • Actual
    • S(D);
    • Vars
      • K(f);S_FLIGHT,XR(G)::S(H)
      • R(e);N_GUARD,XS(D)::QAB1(E),XP(d)
      • R(e);SBLOCK,XR(G)::QAR2(E)
      • S(h);SBLOCK,XR(G)::P(B)
      • P(c);OGATEB,XP(B)::QAB(E),XB(a)
      • B(a);N_GUARD::QAB(E),XP(c)
      • S(h);N_GUARD::QAB1(E),XS(h)
      • S(h);N_GUARD::QAB1(E)
      • S(i);N_GUARD::R1(G),XS(i)
      • S(i);N_GUARD::R1(G)
      • P(c);OGATEB::QAB(E),XB(a)
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