MESON Chess Problem Database
Problem Display
PID: 137214 (1R4bQ/2PBKp2/3N3p/bp1k2r1/6N1/4B3/4nR2/1r6 w - - 0 1)
Lamerat, Leonce
Sports Referee, 1933
#2
9 + 9
| 6490 | yacpdb | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rxb5#
- 1...Rd1
- 2.Rxb5#
- 1...Re1
- 2.Rxb5#
- 1...Rf1
- 2.Rxb5#
- 1...Rg1
- 2.Rxb5#
- 1...Rh1
- 2.Rxb5#
- 1...Rxg4
- 2.Rf5#
- 1...Re5+
- 2.Qxe5#
- 1...Rf5
- 2.Rxf5#
- 1...Rg6
- 2.Rf5#
- 2.Qe5#
- 1...Rg7
- 2.Rf5#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Rd2#
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sf4
- 2.Qd4#
- 1...b4
- 2.Rb5#
- 1...f5
- 2.Qe5#
- 1...Ra1
- Tries
- 1.Qb2?
- threat
- 2.Sf6#
- 2.Rxb5#
- 1...Re5+
- 2.Qxe5#
- 1...Rxg4
- 2.Rf5#
- 2.Rxb5#
- 1...Sd4
- 2.Qxd4#
- 1...Rc1
- 2.Sf6#
- 1...Rf5
- 2.Rxf5#
- 2.Rxb5#
- 1...Rg6
- 2.Rf5#
- 2.Rxb5#
- 2.Qe5#
- 1...Bc3
- 2.Rxb5#
- 1...Bb4
- 2.Sf6#
- 1...Bb6
- 2.Sf6#
- 1...Sc3
- 2.Rd2#
- 2.Qd2#
- 1...b4
- 2.Sf6#
- 2.Rb5#
- 1...f6
- 2.Sxf6#
- 2.Rxb5#
- 1...Rxb2!
- threat
- 1.Qc3?
- threat
- 2.Sf6#
- 2.Bc6#
- 2.Qc5#
- 2.Qc6#
- 1...Re5+
- 2.Qxe5#
- 1...Rxg4
- 2.Bc6#
- 2.Rf5#
- 2.Qc5#
- 1...Sxc3
- 2.Rd2#
- 1...Rc1
- 2.Sf6#
- 2.Bc6#
- 2.Rxb5#
- 1...Rf5
- 2.Bc6#
- 2.Rxf5#
- 2.Qc5#
- 2.Qc6#
- 1...Rg6
- 2.Bc6#
- 2.Rf5#
- 2.Qe5#
- 2.Qc5#
- 2.Qc6#
- 1...Bb4
- 2.Sf6#
- 2.Bc6#
- 2.Qc6#
- 1...Bb6
- 2.Sf6#
- 2.Bc6#
- 2.Qc6#
- 1...Sd4
- 2.Qxd4#
- 1...f6
- 2.Sxf6#
- 2.Bc6#
- 2.Qc5#
- 2.Qc6#
- 1...Bxc3!
- threat
- 1.Qf6?
- threat
- 2.Qf3#
- 1...Re5+
- 2.Qxe5#
- 1...Rxg4
- 2.Rf5#
- 2.Qf5#
- 1...Sd4
- 2.Qxd4#
- 1...Rf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Bh7
- 2.Qxf7#
- 1...Sg1
- 2.Qd4#
- 1...Sc3
- 2.Rd2#
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sf4
- 2.Qd4#
- 1...Rb4!
- threat
- 1.Qb2?
- Keys
- 1.Qa1!
- threat
- 2.Sf6#
- 1...Re5+
- 2.Qxe5#
- 1...Rxa1
- 2.Rxb5#
- 1...Rxg4
- 2.Rf5#
- 1...Sd4
- 2.Qxd4#
- 1...Rb2
- 2.Qh1#
- 1...Rf5
- 2.Rxf5#
- 1...Rg6
- 2.Rf5#
- 2.Qe5#
- 1...Bc3
- 2.Qa8#
- 1...Sc3
- 2.Rd2#
- 1...f6
- 2.Sxf6#
- threat
- 1.Qa1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 12
- Sets
- R(a);N_GUARD::R(H),XP(d)
- R(f);N_GUARD,XS(C)::R(A)
- R(f);CHECK,N_GUARD::QAR1(I),XR(f)
- R(f);N_GUARD::R(A),XR(f)
- R(f);N_GUARD::R(A)
- S(b);N_GUARD::QAR1(I)
- S(b);N_GUARD::QAR1(I),XS(b)
- P(d);S_CUTR(a)::R(H)
- P(h);S_CUTR(f)::QAR1(I)
- Tries
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,N_GUARD::QAR1(I),XR(f)
- S(b);N_GUARD::QAR1(I),XS(b)
- R(a);::S(C)
- B(c);::R(H),XP(d)
- B(c);P_PINS(D)::S(C)
- B(c);::S(C)
- Refutation
- R(a);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(4)
- Vars
- R(f);CHECK,N_GUARD::QAR1(I),XR(f)
- S(b);OGATE,XQ(I)::R(A)
- S(b);N_GUARD::QAR1(I),XS(b)
- Refutation
- B(c);XQ(I)
- Try
- Q(I);
- Threat
- QAB(I)
- Vars
- R(f);CHECK,N_GUARD::QAR1(I),XR(f)
- S(b);N_GUARD::QAR1(I),XS(b)
- B(i);N_GUARD::QAB(I),XP(h)
- S(b);N_GUARD::QAR1(I)
- Refutation
- R(a);
- Try
- Actual
- Q(I);
- Threat
- S(C)
- Vars
- R(f);CHECK,N_GUARD::QAR1(I),XR(f)
- R(a);N_GUARD,XQ(I)::R(H),XP(d)
- R(f);N_GUARD,XS(C)::R(A)
- S(b);N_GUARD::QAR1(I),XS(b)
- R(a);OGATE::QAB(I)
- R(f);N_GUARD::R(A),XR(f)
- B(c);OGATE::QAB(I)
- S(b);OGATE::R(A)
- P(h);::S(C),XP(h)
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).