MESON Chess Problem Database

Problem Display
PID: 223378 (7Q/8/2ppp1K1/1N1kp1N1/3r4/1P4P1/2P2B2/3n4 w - - 0 1)

Campo, Achille

Nuova Rivista degli Scacchi, 1886

7Q/8/2ppp1K1/1N1kp1N1/3r4/1P4P1/2P2B2/3n4

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Sc7#
      • 2.c4#
    • 1...Rd3
      • 2.Sc7#
      • 2.c4#
    • 1...Ra4
      • 2.Sc7#
    • 1...Rb4
      • 2.Sc7#
    • 1...Rc4
      • 2.Sc7#
    • 1...Re4
      • 2.Sc7#
    • 1...Rf4
      • 2.Sc7#
    • 1...Rg4
      • 2.Sc7#
    • 1...Rh4
      • 2.Sc7#
    • 1...e4
      • 2.Qxd4#
    • 1...c5
      • 2.Qa8#
  • Tries
    • 1.Qb8?
      • threat
        • 2.Qxd6#
      • 1...cxb5
        • 2.Qxb5#
      • 1...Kc5!
    • 1.c4+?
      • 1...Rxc4
        • 2.Sc7#
      • 1...Kc5!
  • Keys
    • 1.Se4!
      • 1...Kxe4
        • 2.Qh1#
      • 1...Rxe4
        • 2.Sc7#
      • 1...Sxf2
        • 2.Sbc3#
      • 1...cxb5
        • 2.Qa8#
      • 1...c5
        • 2.Qa8#
      • 1...Rd2
        • 2.Sf6#
      • 1...Rd3
        • 2.Sf6#
      • 1...Ra4
        • 2.Sf6#
      • 1...Rb4
        • 2.Sf6#
      • 1...Rc4
        • 2.Sf6#
      • 1...Sb2
        • 2.Sbc3#
      • 1...Sc3
        • 2.Sbxc3#
      • 1...Se3
        • 2.Sbc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 8
    • REMOVED MATES = 4
  • Sets
    • R(b);::S(E)
    • R(b);P_PINS(F)::S(E)
    • P(d);OGATE::QAR1(H),XR(b)
    • P(e);OGATEB,SBLOCK::QAB(H)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAR1(H),XP(f)
      • Vars
        • P(e);OGATE,XS(E)::QAR2(H),XP(e)
      • Refutation
        • K(c);P-FLIGHT,P_SPINR(b)
    • Try
      • P(A);CHECK
      • Vars
        • R(b);XP(A)::S(E)
      • Refutation
        • K(c);P-FLIGHT,P_SPINR(b)
  • Actual
    • S(F);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(F)::QAB(H)
      • R(b);SBLOCK,XS(F)::S(E)
      • S(a);N_GUARD,XB(B)::S(E)
      • P(e);OGATEB,XS(E)::QAB(H)
      • P(e);OGATEB::QAB(H)
      • R(b);::S(F)
      • S(a);N_GUARD::S(E)
      • S(a);N_GUARD::S(E),XS(a)
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