MESON Chess Problem Database

Problem Display
PID: 95741 (8/6p1/1pNp2K1/1B5p/4kp1P/4P2Q/2P5/8 w - - 0 1)

Puig Ambros, Estanislao

L'Italia Scacchistica, 1954

8/6p1/1pNp2K1/1B5p/4kp1P/4P2Q/2P5/8

#2

7 + 6

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qf5#
    • 1...fxe3
      • 2.Qf5#
    • 1...f3
      • 2.Qe6#
    • 1...d5
      • 2.Bd3#
  • Tries
    • 1.Kg5?
      • 1...Kd5
        • 2.Qf5#
      • 1...fxe3
        • 2.Qg2#
        • 2.Qf5#
        • 2.Qh1#
      • 1...f3
        • 2.Qe6#
      • 1...d5
        • 2.Bd3#
      • 1...g6!
    • 1.Kxg7?
      • 1...Kd5
        • 2.Qf5#
      • 1...f3
        • 2.Qe6#
      • 1...d5
        • 2.Bd3#
      • 1...fxe3!
    • 1.Sd4?
      • threat
        • 2.Qe6#
      • 1...Kd5
        • 2.Qf5#
      • 1...Ke5
        • 2.Qf5#
        • 2.Qe6#
      • 1...fxe3!
    • 1.Be2?
      • threat
        • 2.Qe6#
        • 2.Qf3#
      • 1...fxe3
        • 2.Qf5#
        • 2.Qf3#
      • 1...f3
        • 2.Qe6#
        • 2.Qxf3#
      • 1...Kd5!
    • 1.Bc4?
      • 1...fxe3
        • 2.Qf5#
      • 1...f3
        • 2.Qe6#
      • 1...d5
        • 2.Bd3#
      • 1...b5!
    • 1.Qg2+?
      • 1...Kxe3
        • 2.Qe2#
      • 1...f3!
    • 1.Qg4?
      • 1...Kxe3
        • 2.Qe2#
      • 1...Kd5
        • 2.Qf5#
      • 1...d5
        • 2.Qxf4#
      • 1...hxg4!
    • 1.c3?
      • 1...Kd5
        • 2.Qf5#
      • 1...fxe3
        • 2.Qf5#
      • 1...f3
        • 2.Qe6#
      • 1...d5!
  • Keys
    • 1.Qf1!
      • 1...Kxe3
        • 2.Qe2#
      • 1...Kd5
        • 2.Qc4#
      • 1...fxe3
        • 2.Qf5#
      • 1...d5
        • 2.Qxf4#
      • 1...f3
        • 2.Qd3#

Anticipated by 63576(1909)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR2(C)
    • P(b);SBLOCK,XP(B)::QAB1(C)
    • P(b);SBLOCK::QAR2(C)
    • P(e);SBLOCK::B(E)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR2(C)
        • P(b);SBLOCK::QAR2(C)
        • P(e);SBLOCK::B(E)
      • Refutation
        • P(f);
    • Try
      • K(G);P-FLIGHT,XP(f)
      • Vars
        • K(a);S_FLIGHT::QAR2(C)
        • P(b);SBLOCK::QAR2(C)
        • P(e);SBLOCK::B(E)
      • Refutation
        • P(b);XP(B)
    • Try
      • S(F);
      • Threat
        • QAR2(C)
      • Vars
        • K(a);S_FLIGHT::QAR2(C)
      • Refutation
        • P(b);XP(B)
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • P(b);SBLOCK,XP(B)::QAB1(C)
        • P(b);SBLOCK::QAR2(C)
        • P(e);SBLOCK::B(E)
      • Refutation
        • P(d);
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(B)::QAR1(C)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(C);P_PINP(b)
      • Vars
        • K(a);N_SPINP(b),OGATEB,P-FLIGHT,XP(B)::QAR1(C)
        • K(a);N_SPINP(b),S_FLIGHT::QAR2(C)
        • P(e);SBLOCK::QAR1(C),XP(b)
      • Refutation
        • P(c);N_SPINP(b),XQ(C)
    • Try
      • P(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(C)
        • P(b);SBLOCK,XP(B)::QAB1(C)
        • P(b);SBLOCK::QAR2(C)
      • Refutation
        • P(e);
  • Actual
    • Q(C);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(B)::QAR1(C)
      • K(a);S_FLIGHT::QAB1(C)
      • P(b);OGATE,SBLOCK,XP(B)::QAB1(C)
      • P(e);SBLOCK::QAR1(C),XP(b)
      • P(b);SBLOCK::QAB1(C)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).