MESON Chess Problem Database
Problem Display
PID: 132366 (2B5/B1p5/2kn1p2/2P4K/2P5/5N2/N2R4/br2Q3 w - - 0 1)
Parrinello, Mario
Die Schwalbe, 1987
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Sb4#
- 1...Rd1
- 2.Sb4#
- 1...Rxe1
- 2.Sb4#
- 1...Rb2
- 2.Sd4#
- 1...Rb4
- 2.Sxb4#
- 1...Bb2
- 2.Sb4#
- 1...Bd4
- 2.Sxd4#
- 1...Sxc4
- 2.Qe8#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 2.Qe8#
- 1...Sf5
- 2.Qe4#
- 2.Qe8#
- 1...Sb7
- 2.Bd7#
- 2.Qe4#
- 2.Qe8#
- 1...Sf7
- 2.Qe4#
- 2.Qe8#
- 1...Sxc8
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 2.Qxe8#
- 1...Rc1
- Tries
- 1.Qxb1?
- threat
- 2.Sb4#
- 1...Sxc4
- 2.Bb7#
- 2.Bd7#
- 2.Qb7#
- 1...Sxc8
- 2.Qe4#
- 2.Qb5#
- 1...Bc3!
- threat
- 1.Qe6?
- threat
- 2.Qd5#
- 2.Qd7#
- 1...Rb6
- 2.Qd5#
- 1...Rh1+!
- threat
- 1.Qxb1?
- Keys
- 1.Rb2!
- threat
- 2.Sb4#
- 2.Sd4#
- 1...Rxb2
- 2.Sd4#
- 1...Bxb2
- 2.Sb4#
- 1...Sxc4
- 2.Qe4#
- 1...Sxc8
- 2.Qe8#
- 1...Rd1
- 2.Sb4#
- 1...Sb5
- 2.Sb4#
- 2.Qe4#
- 2.Qe8#
- 1...Sf5
- 2.Sb4#
- 2.Qe4#
- 2.Qe8#
- threat
- 1.Rb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- R(b);N_GUARD::S(B)
- R(b);N_GUARD,XQ(A)::S(B)
- R(b);S_CUTB(a)::S(D)
- R(b);N_GUARD::S(B),XR(b)
- B(a);S_CUTR(b)::S(B)
- B(a);N_GUARD::S(D),XB(a)
- S(d);N_GUARD,XP(E)::QAB(A)
- S(d);N_GUARD::QAB(A),XS(d)
- S(d);N_GUARD,XB(I)::QAB(A)
- Tries
- Try
- Q(A);XR(b)
- Threat
- S(B)
- Refutation
- B(a);
- Try
- Q(A);P_PINS(d)
- Threat
- DUALS(2)
- Vars
- R(b);::QAB1(A)
- Refutation
- R(b);CHECK
- Try
- Actual
- R(C);
- Threat
- DUALS(2)
- Vars
- R(b);XR(C)::S(D)
- B(a);XR(C)::S(B)
- S(d);N_GUARD,XP(E)::QAB(A)
- S(d);N_GUARD,XB(I)::QAB(A)
- R(b);::S(B)
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).