MESON Chess Problem Database

Problem Display
PID: 48412 (8/1pN1K1n1/2p2p2/BPk2pP1/3p3R/3pR1N1/B1n5/7Q w - - 0 1)

Mariani, Stefano

1st Prize, Olympic Ty., 1982

8/1pN1K1n1/2p2p2/BPk2pP1/3p3R/3pR1N1/B1n5/7Q

#2

10 + 9

3485 Sachova skladba 1984
117 Suomen Shakki 1985
3752 FIDE Album (1980-1982) 1988
14744 Nuova Antologia dei Problemisti Italiani 1992
273 Mat Plus 1994

SOLUTION

  • SOUND
  • Sets
    • 1...dxe3
      • 2.Rc4#
    • 1...f4
      • 2.Se4#
    • 1...cxb5
      • 2.Qd5#
    • 1...fxg5
      • 2.Re5#
    • 1...b6
      • 2.Qxc6#
  • Tries
    • 1.Sa6+?
      • 1...bxa6
        • 2.Qxc6#
      • 1...Kxb5!
    • 1.Qe4?
      • 1...Sxe3
        • 2.Qxd4#
      • 1...dxe3
        • 2.Qc4#
      • 1...fxe4
        • 2.Sxe4#
      • 1...cxb5
        • 2.Qd5#
      • 1...fxg5
        • 2.Qe5#
      • 1...Sa1
        • 2.Qxd4#
      • 1...Se1
        • 2.Qxd4#
      • 1...Sa3
        • 2.Qxd4#
      • 1...Sb4
        • 2.Qxd4#
      • 1...Sh5
        • 2.Qxf5#
      • 1...Se6
        • 2.Qxf5#
      • 1...Se8
        • 2.Qxf5#
      • 1...d2
        • 2.Qxc2#
      • 1...b6
        • 2.Qxc6#
      • 1...f4!
  • Keys
    • 1.Qb1!
      • 1...Sxe3
        • 2.Qb4#
      • 1...dxe3
        • 2.Rc4#
      • 1...cxb5
        • 2.Qxb5#
      • 1...fxg5
        • 2.Re5#
      • 1...Sa1
        • 2.Qb4#
      • 1...Se1
        • 2.Qb4#
      • 1...Sa3
        • 2.Qb4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sh5
        • 2.Se6#
      • 1...Se6
        • 2.Sxe6#
      • 1...Se8
        • 2.Se6#
      • 1...d2
        • 2.Qxc2#
      • 1...f4
        • 2.Se4#
      • 1...b6
        • 2.Sa6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE,XR(C)::R1(E)
    • P(e);N_GUARD::S(D)
    • P(f);N_GUARD,XP(G)::QAR1(A)
    • P(g);N_GUARD,XP(H)::R(C)
    • P(h);N_GUARD::QAR1(A),XP(f)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • P(h);XS(I)::QAR1(A),XP(f)
      • Refutation
        • K(d);P-FLIGHT,XP(G)
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD,XR(C)::QAB1(A),XP(c)
        • P(c);OGATE,XR(C)::QAR1(A)
        • P(e);XQ(A)::S(D),XP(e)
        • P(f);N_GUARD,XP(G)::QAR1(A)
        • P(g);N_GUARD,XP(H)::QAR2(A)
        • S(a);N_GUARD::QAB1(A),XP(c)
        • S(i);N_GUARD::QAR(A),XP(e)
        • P(b);OGATE::QAR(A),XS(a)
        • P(h);N_GUARD::QAR1(A),XP(f)
      • Refutation
        • P(e);
  • Actual
    • Q(A);
    • Vars
      • S(a);N_GUARD,XR(C)::QAB1(A)
      • P(c);OGATE,XR(C)::R1(E)
      • P(f);OGATE,XP(G)::QAR1(A),XP(f)
      • P(g);N_GUARD,XP(H)::R(C)
      • S(a);N_GUARD::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(i);N_GUARD::S(I)
      • S(i);N_GUARD::S(I),XS(i)
      • P(b);N_GUARD::QAR(A),XS(a)
      • P(e);N_GUARD::S(D)
      • P(h);N_GUARD::S(I)
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