MESON Chess Problem Database
Problem Display
PID: 168464 (K1B2B2/b4R2/4P3/4k3/Q3NN1P/4P3/2p3r1/3rRn2 w - - 0 1)
Petite, Efren
Problemas, 1959
#2
11 + 6
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Bd6#
- 1...Rb1
- 2.Bd6#
- 1...Rc1
- 2.Bd6#
- 1...Rxe1
- 2.Bd6#
- 1...Rd6
- 2.Bxd6#
- 1...Rd2
- 2.Bg7#
- 1...Re2
- 2.Bg7#
- 1...Rf2
- 2.Bg7#
- 1...Rh2
- 2.Bg7#
- 1...Rg7
- 2.Bxg7#
- 1...Sd2
- 2.Bd6#
- 1...Sg3
- 2.Bg7#
- 1...Ra1
- Tries
- 1.Sf2?
- threat
- 2.Qe4#
- 1...Rd4
- 2.exd4#
- 1...Bd4
- 2.exd4#
- 1...Sd2
- 2.S2d3#
- 1...Sg3
- 2.Sg4#
- 1...Rxf2!
- threat
- 1.Sd3+?
- 1...Kd5
- 2.Sc3#
- 2.Sf6#
- 2.Rf5#
- 1...Rxd3!
- 1...Kd5
- 1.Sg6+?
- 1...Kd5
- 2.Sc3#
- 2.Sf6#
- 2.Rf5#
- 1...Rxg6!
- 1...Kd5
- 1.e7?
- threat
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rxe1
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Bxe3
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Sxe3
- 2.e8Q#
- 2.e8R#
- 1...Rd4
- 2.e8Q#
- 2.e8R#
- 1...Bd4
- 2.e8Q#
- 2.e8R#
- 1...c1Q
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...c1S
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...c1B
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...c1R
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Sg3
- 2.Bg7#
- 2.e8Q#
- 2.e8R#
- 1...Ra1
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rb1
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rc1
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rdd2
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rd3
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rd5
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rd6
- 2.Rf5#
- 1...Rd8
- 2.Rf5#
- 1...Rg1
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rgd2
- 2.Bg7#
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Re2
- 2.Bg7#
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rf2
- 2.Bg7#
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rh2
- 2.Bg7#
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rg3
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rg4
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rg5
- 2.e8Q#
- 2.e8R#
- 1...Rg6
- 2.Rf5#
- 1...Rg7
- 2.Bxg7#
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rg8
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Bc5
- 2.Rf5#
- 1...Bb6
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Bb8
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Sd2
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Sh2
- 2.Rf5#
- 2.e8Q#
- 2.e8R#
- 1...Rd7!
- threat
- 1.Sf2?
- Keys
- 1.Sc3!
- threat
- 2.Qe4#
- 1...Rd4
- 2.exd4#
- 1...Bd4
- 2.exd4#
- 1...Sd2
- 2.Sd3#
- 1...Sg3
- 2.Sg6#
- threat
- 1.Sc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- R(a);N_GUARD::B(K)
- R(a);N_GUARD,XR(A)::B(K)
- R(a);N_GUARD::B(K),XR(a)
- R(d);N_GUARD::B(K)
- R(d);N_GUARD::B(K),XR(d)
- S(b);S_CUTR(a)::B(K)
- S(b);S_CUTR(d)::B(K)
- Tries
- Try
- S(D);
- Threat
- QAR1(C)
- Vars
- R(a);OGATE::R(A)+P(B)DCHECK,XR(a)
- B(f);OGATE::R(A)+P(B)DCHECK,XB(f)
- S(b);S_CUTR(a)::S(D)
- S(b);S_CUTR(d)::S(D)
- Refutation
- R(d);XS(D)
- Try
- S(E);CHECK
- Refutation
- R(a);XS(E)
- Try
- S(E);CHECK
- Refutation
- R(d);XS(E)
- Try
- P(G);
- Threat
- DUALS(3)
- Vars
- S(b);XP(B)::P=Q
- R(a);::P=Q
- B(f);::P=Q
- R(a);::R1(H)
- R(a);P_PINB(J)::R1(H)
- R(d);::P=Q
- R(d);::R1(H)
- B(f);::R1(H)
- Refutation
- R(a);
- Try
- Actual
- S(D);
- Threat
- QAR1(C)
- Vars
- R(a);OGATE::R(A)+P(B)DCHECK,XR(a)
- B(f);OGATE::R(A)+P(B)DCHECK,XB(f)
- S(b);S_CUTR(a)::S(E)
- S(b);S_CUTR(d)::S(E)
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).