MESON Chess Problem Database
Problem Display
PID: 109138 (NKB5/2pR1nQr/1pk5/8/n1PP4/B4N2/7q/3r4 w - - 0 1)
Paradis, Jean-Maurice
La Presse, 1933
#2
9 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Rxc7#
- 1...Qh1
- 2.Rxc7#
- 1...Qa2
- 2.Rxc7#
- 1...Qb2
- 2.Rxc7#
- 1...Qc2
- 2.Rxc7#
- 1...Qd2
- 2.Rxc7#
- 1...Qe2
- 2.Rxc7#
- 1...Qf2
- 2.Rxc7#
- 1...Qg2
- 2.Rxc7#
- 1...Qh3
- 2.Rxc7#
- 1...Qh4
- 2.Rxc7#
- 1...Qh5
- 2.Rxc7#
- 1...Qh6
- 2.Rxc7#
- 1...Ra1
- 2.d5#
- 1...Rb1
- 2.d5#
- 1...Rc1
- 2.d5#
- 1...Re1
- 2.d5#
- 1...Rf1
- 2.d5#
- 1...Rg1
- 2.d5#
- 1...Rh1
- 2.d5#
- 1...Rxd4
- 2.Sxd4#
- 1...Se5
- 2.Bb7#
- 2.Rxc7#
- 2.Qf6#
- 1...Sg5
- 2.Bb7#
- 1...Sd6
- 2.Rxc7#
- 1...Sh6
- 2.Bb7#
- 1...Sh8
- 2.Bb7#
- 1...Qg1
- Tries
- 1.Sxh2?
- threat
- 2.Rxc7#
- 2.Qg2#
- 1...Rxd4
- 2.Rxc7#
- 1...Rxh2
- 2.Rxc7#
- 1...Rxg7
- 2.Rxc7#
- 1...Re1
- 2.Rxc7#
- 2.d5#
- 1...Rf1
- 2.Rxc7#
- 2.d5#
- 1...Rg1
- 2.Rxc7#
- 2.d5#
- 1...Rd2
- 2.Rxc7#
- 1...Rd3
- 2.Rxc7#
- 1...Rh3
- 2.Rxc7#
- 1...Rh4
- 2.Rxc7#
- 1...Rh5
- 2.Rxc7#
- 1...Sc3
- 2.Rxc7#
- 1...Se5
- 2.Bb7#
- 2.Rxc7#
- 2.Qf6#
- 1...Sg5
- 2.Bb7#
- 2.Rxc7#
- 1...Sd6
- 2.Rxc7#
- 1...Sc5!
- threat
- 1.Se5+?
- 1...Sxe5
- 2.Bb7#
- 2.Rxc7#
- 2.Qf6#
- 1...Qxe5!
- 1...Sxe5
- 1.Rd8?
- threat
- 2.Bb7#
- 2.Bd7#
- 1...Rxd4
- 2.Sxd4#
- 2.Bb7#
- 1...Sxd8
- 2.Bd7#
- 1...Qd6
- 2.Bb7#
- 1...Qh3
- 2.Bb7#
- 1...Se5
- 2.Bb7#
- 2.Qf6#
- 1...Sd6
- 2.Bd7#
- 1...Sc5!
- threat
- 1.Qf6+?
- 1...Qd6
- 2.Rxc7#
- 1...Sd6!
- 1...Qd6
- 1.Qg3?
- threat
- 2.Rxc7#
- 1...Se5
- 2.Sxe5#
- 1...Sg5
- 2.Se5#
- 1...Sd6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Sd8
- 2.Se5#
- 1...Sh8
- 2.Se5#
- 1...Qxg3!
- threat
- 1.Qg6+?
- 1...Qd6
- 2.Rxc7#
- 1...Sd6!
- 1...Qd6
- 1.Qxf7?
- threat
- 2.Bb7#
- 2.Qd5#
- 1...Rxd4
- 2.Sxd4#
- 2.Bb7#
- 1...Qe5
- 2.Sxe5#
- 2.Bb7#
- 1...Qd6
- 2.Bb7#
- 1...Qh5
- 2.Bb7#
- 2.Rxc7#
- 2.Qe6#
- 2.Qf6#
- 1...Rh5
- 2.Bb7#
- 1...Rh8
- 2.Qd5#
- 1...Sc3
- 2.Bb7#
- 1...Sc5
- 2.Qd5#
- 1...Rxf7!
- threat
- 1.Sxh2?
- Keys
- 1.Qg2!
- threat
- 2.Sxh2#
- 2.Se5#
- 1...Qxg2
- 2.Rxc7#
- 1...Rxd4
- 2.Sxd4#
- 2.Se5#
- 1...Qg3
- 2.Se5#
- 1...Qg1
- 2.Sxg1#
- 2.Se5#
- 2.Rxc7#
- 1...Qf4
- 2.Se5#
- 1...Qe5
- 2.Sxe5#
- 1...Qd6
- 2.Se5#
- 1...Qh1
- 2.Se5#
- 2.Rxc7#
- 1...Qh3
- 2.Se5#
- 2.Rxc7#
- 1...Qh4
- 2.Sxh4#
- 2.Se5#
- 2.Rxc7#
- 1...Qh5
- 2.Se5#
- 2.Rxc7#
- 1...Qh6
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sh4#
- 2.Se5#
- 2.Sg5#
- 2.Rxc7#
- 1...Re1
- 2.Se5#
- 2.d5#
- 1...Rf1
- 2.Se5#
- 2.d5#
- 1...Rg1
- 2.Se5#
- 2.d5#
- 1...Rd2
- 2.Se5#
- 1...Rd3
- 2.Se5#
- 1...Rh3
- 2.Se5#
- 1...Rh4
- 2.Se5#
- 1...Rh5
- 2.Se5#
- 1...Rg7
- 2.Se5#
- 1...Sc3
- 2.Se5#
- 1...Sc5
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sg5
- 2.Se5#
- 1...Sd6
- 2.Se5#
- threat
- 1.Qg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 13
- REMOVED MATES = 22
- Sets
- Q(b);N_GUARD::R1(E),XP(f)
- R(a);N_GUARD::P(D)
- R(a);XP(D)::S(B),XR(a)
- S(g);::B(I)
- S(g);S_CUTQ(b)::R1(E),XP(f)
- Tries
- Try
- S(B);XQ(b)
- Threat
- DUALS(2)
- Vars
- R(a);XP(D)::R1(E),XP(f)
- R(h);XS(B)::R1(E),XP(f)
- R(h);XQ(F)::R1(E),XP(f)
- R(a);::R1(E),XP(f)
- R(h);::R1(E),XP(f)
- S(c);::R1(E),XP(f)
- S(g);::R1(E),XP(f)
- Refutation
- S(c);
- Try
- S(B);CHECK
- Refutation
- Q(b);XS(B)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- S(g);XR(E)::B(I)
- Q(b);::B(I)
- S(g);::B(I)
- Refutation
- S(c);
- Try
- Q(F);CHECK
- Vars
- Q(b);P_SPINQ(b)::R1(E),XP(f)
- Refutation
- S(g);P_SPINS(g)
- Try
- Q(F);
- Threat
- R1(E),XP(f)
- Vars
- S(g);N_GUARD::S(B),XS(g)
- S(g);N_GUARD::S(B)
- Refutation
- Q(b);XQ(F)
- Try
- Q(F);CHECK
- Vars
- Q(b);P_SPINQ(b)::R1(E),XP(f)
- Refutation
- S(g);P_SPINS(g)
- Try
- Q(F);XS(g)
- Threat
- DUALS(2)
- Vars
- Q(b);::B(I)
- R(h);::B(I)
- R(h);P_PINB(I)::QAB1(F)
- S(c);::B(I)
- S(c);::QAB1(F)
- Refutation
- R(h);XQ(F)
- Try
- Actual
- Q(F);
- Threat
- DUALS(2)
- Vars
- Q(b);N_GUARD,XQ(F)::R1(E),XP(f)
- Q(b);::QAB(F)+S(B),DCHECK
- Q(b);::QAB(F)+S(B),DCHECK,XQ(b)
- R(a);::QAB(F)+S(B),DCHECK
- R(h);::QAB(F)+S(B),DCHECK
- S(c);::QAB(F)+S(B),DCHECK
- S(g);::QAB(F)+S(B),DCHECK,XS(g)
- S(g);::QAB(F)+S(B),DCHECK
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).