MESON Chess Problem Database
Problem Display
PID: 84793 (4rn2/2P5/PR6/P1kN1NRK/p1P1B1p1/3PP2p/r6q/b7 w - - 0 1)
Petite, Efren
Apro-75 JT, 1982
#2
12 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.c8Q#
- 2.c8R#
- 1...Bd4
- 2.exd4#
- 1...Re5
- Tries
- 1.Sf4?
- threat
- 2.Rb5#
- 1...Rxe4
- 2.c8Q#
- 2.c8R#
- 1...Rb2
- 2.Se7#
- 1...Rb8
- 2.Sd4#
- 1...Qb2!
- threat
- 1.Sde7?
- threat
- 2.Rb5#
- 1...Qb2
- 2.Sd4#
- 1...Rb2
- 2.Sg3#
- 1...Rb8!
- threat
- 1.d4+?
- 1...Kxc4
- 2.Rb4#
- 1...Bxd4!
- 1...Kxc4
- 1.c8Q+?
- 1...Qc7
- 2.Qxc7#
- 1...Rxc8!
- 1...Qc7
- 1.c8R+?
- 1...Qc7
- 2.Rxc7#
- 1...Rxc8!
- 1...Qc7
- 1.Sf4?
- Keys
- 1.Sc3!
- threat
- 2.Rb5#
- 1...Rxe4
- 2.Sxe4#
- 1...Qb2
- 2.Se7#
- 1...Rb2
- 2.Sxa4#
- 1...Rb8
- 2.Sg3#
- threat
- 1.Sc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- R(h);N_GUARD,S_CUTQ(c)::P=Q
- B(a);OGATE::P(B),XB(a)
- Tries
- Try
- S(F);
- Threat
- R1(K)
- Vars
- R(h);N_GUARD,XB(D)::P=Q
- R(b);S_CUTB(a)::R(H)+S(G)
- R(h);N_GUARD::R(H)+S(G)
- Refutation
- Q(c);
- Try
- S(F);
- Threat
- R1(K)
- Vars
- Q(c);N_GUARD::R(H)+S(G)
- R(b);S_CUTB(a)::R(H)+S(G)
- Refutation
- R(h);
- Try
- P(A);CHECK
- Vars
- K(g);P-FLIGHT,XP(C)::R1(K)
- Refutation
- B(a);XP(A)
- Try
- P(L);CHECK
- Vars
- Q(c);N_GUARD,P_SPINQ(c)::QAR2(L),XQ(c)
- Refutation
- R(h);XQ(L)
- Try
- P(L);CHECK
- Vars
- Q(c);N_GUARD,P_SPINQ(c)::R(L),XQ(c)
- Refutation
- R(h);XR(L)
- Try
- Actual
- S(F);
- Threat
- R1(K)
- Vars
- R(h);XB(D)::S(F),XR(h)
- Q(c);N_GUARD::R(H)+S(G)
- R(b);N_GUARD::S(F),XP(e)
- R(h);N_GUARD::R(H)+S(G)
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).