MESON Chess Problem Database
Problem Display
PID: 237397 (4K3/Q1p1R1b1/3k4/6r1/8/1N1n1B2/2r5/8 w - - 0 1)
Labai, Zoltan
Revista Romana de Sah, 1974
#2
5 + 6
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Qxc7#
- 1...Rb2
- 2.Qxc7#
- 1...Rd2
- 2.Qxc7#
- 1...Re2
- 2.Qxc7#
- 1...Rf2
- 2.Qxc7#
- 1...Rcg2
- 2.Qxc7#
- 1...Rh2
- 2.Qxc7#
- 1...Bc3
- 2.Qxc7#
- 1...Sc5
- 2.Qxc7#
- 1...Se5
- 2.Qd4#
- 1...c5
- 2.Qb6#
- 2.Qb8#
- 2.Qa6#
- 2.Qc7#
- 2.Qd7#
- 1...c6
- 2.Qb8#
- 2.Qc7#
- 2.Qd7#
- 1...Ra2
- Tries
- 1.Qd4+?
- 1...Rd5
- 2.Qxd5#
- 1...Bxd4!
- 1...Rd5
- 1.Qb6+?
- 1...Rc6
- 2.Qxc6#
- 1...c6
- 2.Qc7#
- 2.Qd8#
- 2.Qb8#
- 1...cxb6!
- 1...Rc6
- 1.Qa6+?
- 1...Rc6
- 2.Qxc6#
- 1...c6!
- 1...Rc6
- 1.Qd4+?
- Keys
- 1.Qa8!
- threat
- 2.Qd8#
- 1...Rd5
- 2.Qxd5#
- 1...Sc5
- 2.Qc6#
- 1...Se5
- 2.Qd5#
- threat
- 1.Qa8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- R(a);N_GUARD::QAB1(C),XP(e)
- R(a);N_GUARD,P_PINR(D)::QAB1(C),XP(e)
- B(f);S_CUTR(a)::QAB1(C),XP(e)
- S(b);S_CUTR(a)::QAB1(C),XP(e)
- S(b);S_CUTB(f),S_CUTR(c)::QAR2(C)
- Tries
- Try
- Q(C);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::QAR1(C),XR(c)
- Refutation
- B(f);XQ(C)
- Try
- Q(C);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAR1(C),XR(a)
- Refutation
- P(e);XQ(C)
- Try
- Q(C);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAR1(C),XR(a)
- Refutation
- P(e);P_SPINP(e)
- Try
- Actual
- Q(C);
- Threat
- QAR2(C)
- Vars
- R(c);N_GUARD::QAR1(C),XR(c)
- S(b);S_CUTR(a)::QAR1(C)
- S(b);S_CUTR(c)::QAR1(C)
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).