MESON Chess Problem Database
Problem Display
PID: 102411 (Q7/5r2/2pnN3/2nkB3/N1pP3R/brp1PP1B/6PK/8 w - - 0 1)
Herpai, S Ferenc
Bulletin Ouvrier des Echecs, 1949
#2
11 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Sxc3#
- 1...Rb2
- 2.Sxc3#
- 1...Rb4
- 2.Sxc3#
- 1...Rb5
- 2.Sxc3#
- 1...Rb6
- 2.Sxc3#
- 2.Sxb6#
- 1...Rbb7
- 2.Sxc3#
- 1...Rb8
- 2.Sxc3#
- 1...Rxf3
- 2.Sc7#
- 1...Rf4
- 2.Sxf4#
- 2.Sc7#
- 1...Rf5
- 2.Sc7#
- 1...Rf6
- 2.Sc7#
- 1...Ra7
- 2.Sf4#
- 1...Rfb7
- 2.Sf4#
- 1...Rc7
- 2.Sf4#
- 2.Sxc7#
- 1...Rd7
- 2.Sf4#
- 1...Re7
- 2.Sf4#
- 1...Rg7
- 2.Sf4#
- 1...Rh7
- 2.Sf4#
- 1...Rf8
- 2.Sc7#
- 1...Bb4
- 2.Sb6#
- 1...Sd7
- 2.Sc7#
- 1...Sb5
- 2.Sb6#
- 1...Sf5
- 2.Sf4#
- 1...Rb1
- Tries
- 1.Qa5?
- 1...Rxf3
- 2.Sc7#
- 1...Rf5
- 2.Sc7#
- 1...Sf5
- 2.Sf4#
- 1...Rb1
- 2.Sxc3#
- 1...Rb2
- 2.Sxc3#
- 1...Rb4
- 2.Sxc3#
- 2.Qxc5#
- 1...Rb5
- 2.Sxc3#
- 1...Rb6
- 2.Sxc3#
- 2.Sxb6#
- 1...Rbb7
- 2.Sxc3#
- 1...Rb8
- 2.Sxc3#
- 1...Rf4
- 2.Sxf4#
- 2.Sc7#
- 1...Rf6
- 2.Sc7#
- 1...Ra7
- 2.Sf4#
- 1...Rfb7
- 2.Sf4#
- 1...Rc7
- 2.Sf4#
- 2.Sxc7#
- 1...Rd7
- 2.Sf4#
- 1...Re7
- 2.Sf4#
- 1...Rg7
- 2.Sf4#
- 1...Rh7
- 2.Sf4#
- 1...Rf8
- 2.Sc7#
- 1...Bc1
- 2.Qxc5#
- 1...Bb2
- 2.Qxc5#
- 1...Bb4
- 2.Sb6#
- 1...Se4
- 2.fxe4#
- 1...Sb5
- 2.Sb6#
- 1...Sb7
- 2.e4#
- 1...Sc8
- 2.e4#
- 1...Se8
- 2.e4#
- 1...c2!
- 1...Rxf3
- 1.Qg8?
- threat
- 2.Sf4#
- 2.Sc7#
- 1...Rxf3
- 2.Sc7#
- 1...Rbb7
- 2.Sxc3#
- 2.Sf4#
- 1...Rf4
- 2.Sxf4#
- 2.Sc7#
- 1...Rc7
- 2.Sf4#
- 2.Sxc7#
- 1...Sd3
- 2.Sc7#
- 1...Sa6
- 2.Sf4#
- 1...Sb5
- 2.Sb6#
- 2.Sf4#
- 1...Se8
- 2.Sf4#
- 1...Sxe6!
- threat
- 1.Qa5?
- Keys
- 1.Qd8!
- threat
- 2.Qxd6#
- 1...Sxa4
- 2.e4#
- 1...Sxe6
- 2.e4#
- 1...Rd7
- 2.Sf4#
- 1...Sd3
- 2.e4#
- 1...Se4
- 2.fxe4#
- 1...Sa6
- 2.e4#
- 1...Sb7
- 2.e4#
- 1...Sd7
- 2.Sc7#
- threat
- 1.Qd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 18
- Sets
- R(b);N_GUARD::S(F),XP(c)
- R(b);N_GUARD,P_PINP(A)::S(F),XP(c)
- R(b);N_GUARD,N_SPINP(g)::S(F),XP(c)
- R(i);N_GUARD,XP(D)::S(J)
- R(i);N_GUARD::S(J)
- R(i);N_GUARD,N_SPINP(g)::S(J)
- B(a);S_CUTR(b)::S(F)
- S(e);S_CUTR(i)::S(J)
- S(h);S_CUTR(b)::S(F)
- S(h);S_CUTR(i)::S(J)
- Tries
- Try
- Q(K);N_PINP(g),P_PINS(e)
- Vars
- R(i);N_GUARD,XP(D)::S(J)
- R(i);N_GUARD::S(J)
- S(h);S_CUTR(i)::S(J)
- R(b);N_GUARD::S(F),XP(c)
- R(b);N_GUARD,P_PINP(A)::S(F),XP(c)
- R(b);N_GUARD,N_SPINS(e)::S(F),XP(c)
- B(a);N_GUARD::QAR1(K),XS(e)
- B(a);S_CUTR(b)::S(F)
- S(h);OGATE::P(D),XS(h)
- S(h);N_SPINS(e),S_CUTR(b)::S(F)
- S(h);N_GUARD::P(C)
- Refutation
- P(c);
- Try
- Q(K);N_PINP(g)
- Threat
- DUALS(2)
- Vars
- R(i);XP(D)::QAB(K)+S(J),DCHECK
- S(e);::S(J)
- S(h);::S(J)
- Refutation
- S(e);XS(J)
- Try
- Actual
- Q(K);N_PINP(g),P_PINS(h)
- Threat
- QAR1(K),XS(h)
- Vars
- S(e);N_GUARD,XS(F)::P(C)
- S(e);N_GUARD,XS(J)::P(C)
- R(i);N_GUARD,N_SPINS(h)::S(J)
- S(e);N_GUARD::P(C)
- S(e);OGATE::P(D),XS(e)
- S(e);N_SPINS(h),S_CUTR(i)::S(J)
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).