MESON Chess Problem Database
Problem Display
PID: 168337 (3Q4/8/b7/6p1/2B1p3/8/4Rr1p/4rk1K w - - 0 1)
Petite, Efren
Probleemblad, 1959
#2
4 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Qxd1#
- 1...Rexe2
- 2.Qd1#
- 1...Rfxe2
- 2.Qf6#
- 2.Qf8#
- 1...Rf6
- 2.Qxf6#
- 1...Rf8
- 2.Qxf8#
- 1...Rd1
- Tries
- 1.Ra2+?
- 1...Ree2
- 2.Ra1#
- 2.Qd1#
- 1...Rfe2
- 2.Qf6#
- 2.Qf8#
- 1...Bxc4!
- 1...Ree2
- 1.Rb2+?
- 1...Ree2
- 2.Rb1#
- 2.Qd1#
- 1...Rfe2
- 2.Qf6#
- 2.Qf8#
- 1...Bxc4!
- 1...Ree2
- 1.Rc2+?
- 1...Ree2
- 2.Rc1#
- 2.Qd1#
- 1...Rfe2
- 2.Qf6#
- 2.Qf8#
- 1...Bxc4!
- 1...Ree2
- 1.Rd2+?
- 1...Ree2
- 2.Rd1#
- 1...Rfe2
- 2.Qf6#
- 2.Qf8#
- 1...Bxc4!
- 1...Ree2
- 1.Re3+?
- 1...Ree2
- 2.Qd1#
- 1...Rfe2
- 2.Qf6#
- 2.Qf8#
- 1...Bxc4!
- 1...Ree2
- 1.Rxe4+?
- 1...Ree2
- 2.Qd1#
- 1...Rfe2
- 2.Qf6#
- 2.Qf8#
- 1...Bxc4!
- 1...Ree2
- 1.Qb6?
- threat
- 2.Rxf2#
- 2.Qxf2#
- 1...Rexe2
- 2.Qb1#
- 1...Rfxe2
- 2.Qf6#
- 1...Ra1
- 2.Qxf2#
- 1...Rb1
- 2.Qxf2#
- 2.Qxb1#
- 1...Rc1
- 2.Qxf2#
- 1...Rd1
- 2.Qxf2#
- 1...Rg2
- 2.Rf2#
- 1...Rf3
- 2.Rf2#
- 1...Rf4
- 2.Rf2#
- 1...Rf5
- 2.Rf2#
- 1...Rf6
- 2.Rf2#
- 2.Qxf6#
- 1...Rf7
- 2.Rf2#
- 1...Rf8
- 2.Rf2#
- 1...e3!
- threat
- 1.Qd2?
- threat
- 2.Rxe1#
- 2.Rxf2#
- 2.Qxe1#
- 1...Rexe2
- 2.Qc1#
- 2.Qd1#
- 1...Ra1
- 2.Re1#
- 2.Rxf2#
- 1...Rb1
- 2.Re1#
- 2.Rxf2#
- 1...Rc1
- 2.Re1#
- 2.Rxf2#
- 2.Qxc1#
- 1...Rd1
- 2.Re1#
- 2.Rxf2#
- 2.Qxd1#
- 1...Rg2
- 2.Rxe1#
- 2.Rf2#
- 2.Qxe1#
- 1...Rf3
- 2.Rxe1#
- 2.Rf2#
- 2.Qxe1#
- 1...Rf4
- 2.Rxe1#
- 2.Rf2#
- 2.Qxe1#
- 1...Rf5
- 2.Rxe1#
- 2.Rf2#
- 2.Qxe1#
- 1...Rf6
- 2.Rxe1#
- 2.Rf2#
- 2.Qxe1#
- 1...Rf7
- 2.Rxe1#
- 2.Rf2#
- 2.Qxe1#
- 1...Rf8
- 2.Rxe1#
- 2.Rf2#
- 2.Qxe1#
- 1...Rfxe2!
- threat
- 1.Qd4?
- threat
- 2.Rxf2#
- 2.Qxf2#
- 1...Rexe2
- 2.Qa1#
- 2.Qd1#
- 1...Rfxe2
- 2.Qf6#
- 1...Ra1
- 2.Qxa1#
- 2.Qxf2#
- 1...Rb1
- 2.Qxf2#
- 1...Rc1
- 2.Qxf2#
- 1...Rd1
- 2.Qxf2#
- 2.Qxd1#
- 1...Rg2
- 2.Rf2#
- 1...Rf3
- 2.Rf2#
- 1...Rf4
- 2.Rf2#
- 1...Rf5
- 2.Rf2#
- 1...Rf6
- 2.Rf2#
- 2.Qxf6#
- 1...Rf7
- 2.Rf2#
- 1...Rf8
- 2.Rf2#
- 1...e3!
- threat
- 1.Ra2+?
- Keys
- 1.Qa5!
- threat
- 2.Rxe1#
- 2.Qxe1#
- 1...Rexe2
- 2.Qa1#
- 1...Rfxe2
- 2.Qf5#
- 1...Ra1
- 2.Re1#
- 2.Qxa1#
- 1...Rb1
- 2.Re1#
- 1...Rc1
- 2.Re1#
- 1...Rd1
- 2.Re1#
- 1...Rg2
- 2.Qxe1#
- 1...Rf3
- 2.Qxe1#
- 1...Rf4
- 2.Qxe1#
- 1...Rf5
- 2.Qxe1#
- 2.Qxf5#
- 1...Rf6
- 2.Qxe1#
- 1...Rf7
- 2.Qxe1#
- 1...Rf8
- 2.Qxe1#
- threat
- 1.Qa5!
This is a version of 84789
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(a);OGATEB::QAR2(D),XR(a)
- R(a);OGATEB,P_SPINR(a),XR(B)::QAR2(D)
- R(c);OGATEB::QAR(D),XR(c)
- R(c);OGATEB::QAB(D),XR(c)
- Tries
- Try
- R(B);CHECK
- Refutation
- B(g);XB(C)
- Try
- R(B);CHECK
- Refutation
- B(g);XB(C)
- Try
- R(B);CHECK
- Refutation
- B(g);XB(C)
- Try
- R(B);CHECK
- Vars
- R(a);P_SPINR(a),S_CUTB(g),S_CUTR(c)::R(B)
- Refutation
- B(g);XB(C)
- Try
- R(B);CHECK
- Vars
- R(a);P_SPINR(a),S_CUTB(g),S_CUTR(c)::QAR2(D)
- Refutation
- B(g);XB(C)
- Try
- R(B);CHECK,XP(e)
- Vars
- R(a);P_SPINR(a),S_CUTB(g),S_CUTR(c)::QAR2(D)
- Refutation
- B(g);XB(C)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(a);OGATEB,P_SPINR(a),XR(B)::QAR(D)
- R(c);OGATEB,P_SPINR(c),XR(B)::QAR(D)
- R(a);::QAR1(D),XR(c)
- R(c);::B(C)+R(B),DCHECK
- Refutation
- P(e);
- Try
- Q(D);
- Threat
- DUALS(3)
- Refutation
- R(c);P_SPINR(c),XR(B)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(c);OGATEB,P_SPINR(c),XR(B)::QAR(D)
- R(a);::QAR1(D),XR(c)
- R(c);::B(C)+R(B),DCHECK
- Refutation
- P(e);
- Try
- Actual
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(a);OGATEB,P_SPINR(a),XR(B)::QAR(D)
- R(c);OGATEB,P_SPINR(c),XR(B)::QAR(D)
- R(a);::B(C)+R(B),DCHECK
- R(c);::QAR1(D),XR(a)
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).