MESON Chess Problem Database

Problem Display
PID: 198198 (8/5p2/N1pp2p1/3kP1Q1/1R1N3K/4pP2/3nB3/4R3 w - - 0 1)

Nield, Joshua

L'Italia Scacchistica, 1920

8/5p2/N1pp2p1/3kP1Q1/1R1N3K/4pP2/3nB3/4R3

#2

9 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf3+
      • 2.Bxf3#
    • 1...c5
      • 2.Sc7#
    • 1...dxe5
      • 2.Qd8#
    • 1...f5
      • 2.exf5 ep#
    • 1...f6
      • 2.exf6#
  • Tries
    • 1.Bc4+?
      • 1...Kxd4
        • 2.Qxe3#
      • 1...Sxc4!
    • 1.Rc1?
      • threat
        • 2.Sc7#
      • 1...Sxf3+
        • 2.Bxf3#
      • 1...dxe5
        • 2.Qd8#
      • 1...f5
        • 2.exf5 ep#
      • 1...Sc4!
  • Keys
    • 1.Rd1!
      • 1...Sxf3+
        • 2.Bxf3#
      • 1...dxe5
        • 2.Qd8#
      • 1...f5
        • 2.exf5 ep#
      • 1...Sb1
        • 2.Bc4#
      • 1...Sf1
        • 2.Bc4#
      • 1...Sb3
        • 2.Bc4#
      • 1...Sc4
        • 2.Bxc4#
      • 1...Se4
        • 2.Bc4#
      • 1...c5
        • 2.Sc7#
      • 1...f6
        • 2.exf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(a);CHECK,OGATE,XP(C)::B(B),XS(a)
    • P(d);SBLOCK::S(I)
    • P(e);OGATEB,P_SPINP(e),SBLOCK,XP(G)::QAR(H)
    • P(g);OGATE::QAR(H)+P(G),XP(g),EP
    • P(g);OGATE::QAR(H)+P(G),XP(g)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(E)::QAB1(H),XP(b)
      • Refutation
        • S(a);XB(B)
    • Try
      • R(A);
      • Threat
        • S(I)
      • Vars
        • S(a);CHECK,OGATE,XP(C)::B(B),XS(a)
        • P(e);OGATEB,P_SPINP(e),SBLOCK,XP(G)::QAR(H)
        • P(g);OGATE::QAR(H)+P(G),XP(g),EP
      • Refutation
        • S(a);
  • Actual
    • R(A);
    • Vars
      • S(a);CHECK,OGATE,XP(C)::B(B),XS(a)
      • P(e);OGATEB,P_SPINP(e),SBLOCK,XP(G)::QAR(H)
      • P(g);OGATE::QAR(H)+P(G),XP(g),EP
      • S(a);N_GUARD::B(B)
      • S(a);N_GUARD::B(B),XS(a)
      • P(d);SBLOCK::S(I)
      • P(g);OGATE::QAR(H)+P(G),XP(g)
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Developed and maintained by Brian Stephenson.
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