MESON Chess Problem Database

Problem Display
PID: 136678 (4N3/b3N2p/Rp5n/3PkB2/1Q2np2/8/1K6/R6b w - - 0 1)

Giacobbe, Daniele

L'Italia Scacchistica, 2003

4N3/b3N2p/Rp5n/3PkB2/1Q2np2/8/1K6/R6b

#2

8 + 8

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qc3#
    • 1...Sf2
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sg3
      • 2.Qc3#
    • 1...Sc5
      • 2.Qc3#
    • 1...Sg5
      • 2.Qc3#
    • 1...Sd6
      • 2.Qc3#
    • 1...Sf6
      • 2.Qc3#
    • 1...f3
      • 2.Qxe4#
    • 1...b5
      • 2.Re6#
  • Tries
    • 1.Bxe4?
      • threat
        • 2.Sc6#
      • 1...Bxe4
        • 2.Qc3#
      • 1...f3!
    • 1.Re1?
      • threat
        • 2.Qc3#
      • 1...f3
        • 2.Rxe4#
        • 2.Qxe4#
      • 1...b5
        • 2.Re6#
      • 1...Sxf5!
    • 1.Rxh1?
      • threat
        • 2.Qxe4#
      • 1...Sd2
        • 2.Qc3#
      • 1...Sf2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sg3
        • 2.Qc3#
      • 1...Sc5
        • 2.Qc3#
      • 1...Sg5
        • 2.Qc3#
      • 1...Sd6
        • 2.Qc3#
      • 1...Sf6
        • 2.Qc3#
      • 1...Sxf5!
    • 1.R1a4?
      • threat
        • 2.Qd4#
      • 1...f3
        • 2.Qxe4#
      • 1...b5
        • 2.Re6#
      • 1...Sxf5!
    • 1.Rxb6?
      • threat
        • 2.Re6#
      • 1...f3
        • 2.Qxe4#
      • 1...Sc5
        • 2.Qc3#
      • 1...Sg5
        • 2.Qc3#
      • 1...Sd6
        • 2.Qc3#
      • 1...Bxb6!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Qd4#
      • 1...Sxf5
        • 2.Sc6#
      • 1...f3
        • 2.Qxe4#
      • 1...Sd2
        • 2.Qc3#
      • 1...b5
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • S(b);N_GUARD::QAB(C)
    • S(b);N_GUARD::QAB(C),XS(b)
    • P(c);S_CUTB(a)::QAR1(C),XS(b)
    • P(e);OGATE::R1(F)
  • Tries
    • Try
      • B(E);XS(b)
      • Threat
        • S(G)
      • Vars
        • B(a);SBLOCK,XB(E)::QAB(C)
      • Refutation
        • P(c);
    • Try
      • R(A);P_PINS(b)
      • Threat
        • QAB(C)
      • Vars
        • P(e);OGATE::R1(F)
      • Refutation
        • S(f);XB(E)
    • Try
      • R(A);XB(a)
      • Threat
        • QAR1(C),XS(b)
      • Vars
        • S(b);N_GUARD::QAB(C)
        • S(b);N_GUARD::QAB(C),XS(b)
      • Refutation
        • S(f);XB(E)
    • Try
      • R(A);
      • Threat
        • QAB1(C)
      • Vars
        • P(c);S_CUTB(a)::QAR1(C),XS(b)
        • P(e);OGATE::R1(F)
      • Refutation
        • S(f);XB(E)
    • Try
      • R(F);XP(e)
      • Threat
        • R1(F)
      • Vars
        • P(c);S_CUTB(a)::QAR1(C),XS(b)
        • S(b);N_GUARD::QAB(C)
      • Refutation
        • B(g);XR(F)
  • Actual
    • R(A);
    • Threat
      • QAB1(C)
    • Vars
      • S(f);SBLOCK,XB(E)::S(G)
      • P(c);S_CUTB(a)::QAR1(C),XS(b)
      • S(b);N_GUARD::QAB(C)
      • P(e);OGATE::R1(F)
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