MESON Chess Problem Database
Problem Display
PID: 75994 (Bq3n2/8/2rP3R/Rb2kP2/n4NPp/2PQP1N1/5p2/b4K2 w - - 0 1)
Guida, Marco
2nd Prize, StrateGems, 2007
#2
12 + 9
| 145 | StrateGems | 2009 |
| 56 | The Problemist | 2009 |
| 23 | Die Schwalbe | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.Qd5#
- 1...Se6
- 2.Rxe6#
- 1...Sd7
- 2.Re6#
- 1...Sh7
- 2.Re6#
- 1...Rc4
- Tries
- 1.Kxf2?
- threat
- 2.Qe4#
- 2.Qd4#
- 2.Qd5#
- 1...Qxd6
- 2.Qe4#
- 1...Rxd6
- 2.Qe4#
- 1...Bxc3
- 2.Qe4#
- 2.Qd5#
- 1...Sxc3
- 2.Qd4#
- 1...Sg6
- 2.Qd4#
- 1...Qa7
- 2.Qe4#
- 2.Qd5#
- 1...Qb6
- 2.Qe4#
- 2.Qd5#
- 1...Rc4
- 2.Qd5#
- 1...Rc5
- 2.Qe4#
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 2.Qd5#
- 1...Sb6
- 2.Qe4#
- 2.Qd4#
- 1...Se6
- 2.Rxe6#
- 2.Qd5#
- 1...hxg3+!
- threat
- 1.Sge2?
- threat
- 2.Qd4#
- 2.Qd5#
- 1...Rxd6
- 2.Qe4#
- 1...Bxc3
- 2.Qd5#
- 1...Sxc3
- 2.Qd4#
- 1...Sg6
- 2.Qd4#
- 1...Qa7
- 2.Qd5#
- 1...Qb6
- 2.Qd5#
- 1...Rc4
- 2.Qd5#
- 1...Rc5
- 2.Qe4#
- 2.Qd4#
- 1...Sb6
- 2.Qd4#
- 1...Se6
- 2.Rxe6#
- 2.Qd5#
- 1...Qxd6!
- threat
- 1.Rxb5+?
- 1...Rc5
- 2.Qe4#
- 2.Qd4#
- 1...Sc5
- 2.Qe4#
- 2.Qd4#
- 2.Qd5#
- 1...Qxb5!
- 1...Rc5
- 1.c4?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...Qxd6
- 2.Qe4#
- 1...Rxc4
- 2.Qd5#
- 1...Rxd6
- 2.Qe4#
- 1...hxg3
- 2.Qd5#
- 1...Rc5
- 2.Qe4#
- 1...Bd4
- 2.Qe4#
- 2.Qxd4#
- 1...Sc3
- 2.Qd4#
- 1...Sc5
- 2.Qd5#
- 1...Sb6
- 2.Qe4#
- 1...Se6
- 2.Rxe6#
- 2.Qd5#
- 1...Sg6!
- threat
- 1.Kxf2?
- Keys
- 1.Sfe2!
- threat
- 2.Qe4#
- 2.Qd4#
- 1...Qxd6
- 2.Qe4#
- 1...Rxd6
- 2.Qe4#
- 1...Bxc3
- 2.Qe4#
- 1...Sxc3
- 2.Qd4#
- 1...hxg3
- 2.Qd4#
- 1...Sg6
- 2.Qd4#
- 1...Qa7
- 2.Qe4#
- 1...Qb6
- 2.Qe4#
- 1...Rc4
- 2.Qd5#
- 1...Sc5
- 2.Qd4#
- 1...Se6
- 2.Rxe6#
- threat
- 1.Sfe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 2
- Sets
- R(g);N_PINQ(C)::QAR1(C)
- S(i);N_GUARD::R1(K),XS(i)
- S(i);N_GUARD::R1(K)
- Tries
- Try
- K(A);N_SPINQ(C),P-FLIGHT,XP(b)
- Threat
- DUALS(3)
- Vars
- Q(h);XP(J)::QAR1(C)
- R(g);XP(J)::QAR1(C)
- S(c);XP(B)::QAB1(C)
- S(i);::QAB1(C)
- R(g);::QAR1(C)
- Refutation
- P(d);CHECK,XS(E)
- Try
- S(E);N_SPINQ(C)
- Threat
- DUALS(2)
- Vars
- R(g);XP(J)::QAR1(C)
- B(a);XP(B)::QAR1(C)
- S(c);XP(B)::QAB1(C)
- S(i);::QAB1(C)
- Q(h);::QAR1(C)
- R(g);::QAR1(C)
- S(c);::QAB1(C)
- Refutation
- Q(h);XP(J)
- Try
- R(H);CHECK,N_SPINQ(C),XB(e)
- Refutation
- Q(h);P_PINQ(C),XR(H)
- Try
- P(B);N_SPINQ(C)
- Threat
- DUALS(2)
- Vars
- Q(h);XP(J)::QAR1(C)
- R(g);XP(B)::QAR1(C)
- R(g);XP(J)::QAR1(C)
- P(d);XS(E)::QAR1(C)
- R(g);N_SPINB(e)::QAR1(C)
- S(c);S_CUTB(a)::QAB1(C)
- S(c);N_SPINB(e)::QAR1(C)
- S(c);::QAR1(C)
- Refutation
- S(i);
- Try
- Actual
- S(F);N_SPINQ(C)
- Threat
- DUALS(2)
- Vars
- Q(h);XP(J)::QAR1(C)
- R(g);XP(J)::QAR1(C)
- B(a);XP(B)::QAR1(C)
- S(c);XP(B)::QAB1(C)
- P(d);XS(E)::QAB1(C)
- S(i);::QAB1(C)
- Q(h);::QAR1(C)
- R(g);::QAR1(C)
- S(c);N_SPINB(e)::QAB1(C)
- S(i);N_GUARD::R1(K),XS(i)
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).