MESON Chess Problem Database

Problem Display
PID: 6177 (8/r7/5B1p/4Nn1k/4p1Nb/4P2r/5Q2/3BK1RR w K - 0 1)

Mari, Alberto

1st Prize, Shakhmaty, 1927

8/r7/5B1p/4Nn1k/4p1Nb/4P2r/5Q2/3BK1RR

#2

9 + 7

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh1
      • 2.Sh2#
    • 1...Rh2
      • 2.Sxh2#
    • 1...Rxe3+
      • 2.Sxe3#
    • 1...Rg3
      • 2.Qxf5#
    • 1...Bxf2+
      • 2.Sxf2#
    • 1...Bg3
      • 2.Sh2#
    • 1...Bxf6
      • 2.Sxf6#
  • Tries
    • 1.Bxh4?
      • threat
        • 2.Sf6#
      • 1...Rxe3+
        • 2.Sxe3#
      • 1...Sg3!
    • 1.Bd8?
      • threat
        • 2.Sf6#
      • 1...Rxe3+
        • 2.Sxe3#
      • 1...Bxf2+
        • 2.Sxf2#
      • 1...Bf6
        • 2.Sxf6#
      • 1...Rg3
        • 2.Qxf5#
      • 1...Bg3
        • 2.Sh2#
      • 1...Sg3!
    • 1.Qxh4+?
      • 1...Rxh4
        • 2.Sf2#
      • 1...Sxh4!
  • Keys
    • 1.Be7!
      • threat
        • 2.Sf6#
      • 1...Rxe3+
        • 2.Sxe3#
      • 1...Bxf2+
        • 2.Sxf2#
      • 1...Bf6
        • 2.Sxf6#
      • 1...Rg3
        • 2.Qxf5#
      • 1...Bg3
        • 2.Sh2#
      • 1...Sg3
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD,P_PINR(C),XR(D)::B(A)+S(G)
    • R(a);N_GUARD::B(A)+S(G),XR(a)
    • R(a);CHECK,P_SPINB(c),XP(F)::B(A)+S(G),XR(a)
    • R(a);N_PINQ(E),P_SPINB(c)::QAR2(E),XS(d)
    • B(c);CHECK,P_SPINR(a),XQ(E)::B(A)+S(G),XB(c)
    • B(c);P_SPINR(a)::B(A)+S(G)
    • B(c);N_PINQ(E),P_SPINR(a),XB(I)::B(A)+S(G),DCHECK,XB(c)
  • Tries
    • Try
      • B(I);N_SPINQ(E),XB(c)
      • Threat
        • B(A)+S(G),DCHECK
      • Vars
        • R(a);CHECK,XP(F)::B(A)+S(G),XR(a)
      • Refutation
        • S(d);
    • Try
      • B(I);
      • Threat
        • B(A)+S(G),DCHECK
      • Vars
        • R(a);CHECK,P_SPINB(c),XP(F)::B(A)+S(G),XR(a)
        • B(c);CHECK,P_SPINR(a),XQ(E)::B(A)+S(G),XB(c)
        • B(c);N_PINQ(E),P_SPINR(a)::B(A)+S(G),DCHECK,XB(c)
        • R(a);N_PINQ(E),P_SPINB(c)::QAR2(E),XS(d)
        • B(c);P_SPINR(a)::B(A)+S(G)
      • Refutation
        • S(d);N_PINQ(E)
    • Try
      • Q(E);CHECK,N_SPINQ(E),XB(c)
      • Vars
        • R(a);P_SPINR(a),XQ(E)::B(A)+S(G)
      • Refutation
        • S(d);XQ(E)
  • Actual
    • B(I);
    • Threat
      • B(A)+S(G),DCHECK
    • Vars
      • R(a);CHECK,P_SPINB(c),XP(F)::B(A)+S(G),XR(a)
      • B(c);CHECK,P_SPINR(a),XQ(E)::B(A)+S(G),XB(c)
      • B(c);N_PINQ(E),P_SPINR(a)::B(A)+S(G),DCHECK,XB(c)
      • R(a);N_PINQ(E),P_SPINB(c)::QAR2(E),XS(d)
      • B(c);P_SPINR(a)::B(A)+S(G)
      • S(d);N_PINQ(E)::QAB(E)
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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).