MESON Chess Problem Database
Problem Display
PID: 99850 (8/8/3P3K/2p1pp1P/R2r3k/B3rQp1/3pNN2/2q5 w - - 0 1)
Colonelli, Hercules
Apro-75 JT, 1982
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Qh1#
- 1...Qxa3
- 2.Qh1#
- 1...Qh1
- 2.Qxh1#
- 1...Qc2
- 2.Qh1#
- 1...Qc3
- 2.Qh1#
- 1...Qc4
- 2.Qh1#
- 1...Ree4
- 2.Qxg3#
- 1...d1S
- 2.Qh1#
- 1...d1B
- 2.Qh1#
- 1...e4
- 2.Qf4#
- 1...f4
- 2.Qg4#
- 1...Qb2
- Tries
- 1.Sxd4?
- threat
- 2.Sxf5#
- 1...exd4
- 2.Qf4#
- 1...f4
- 2.Sf5#
- 2.Qg4#
- 1...cxd4!
- threat
- 1.Rxd4+?
- 1...Re4
- 2.Qxg3#
- 1...exd4
- 2.Qf4#
- 1...e4
- 2.Qf4#
- 1...f4
- 2.Qg4#
- 1...cxd4!
- 1...Re4
- 1.Qxf5?
- threat
- 2.Qh3#
- 2.Qg5#
- 2.Qf6#
- 1...Qf1
- 2.Qg5#
- 2.Qf6#
- 1...Qh1
- 2.Qg5#
- 2.Qf6#
- 1...Rf3
- 2.Qh3#
- 2.Qg5#
- 1...Rg4
- 2.Rxg4#
- 2.Qxg4#
- 2.Qg5#
- 2.Qf6#
- 1...g2
- 2.Qg5#
- 2.Qf6#
- 1...gxf2!
- threat
- 1.Sxd4?
- Keys
- 1.d7!
- threat
- 2.d8Q#
- 2.d8B#
- 1...Qxa3
- 2.Qh1#
- 2.d8Q#
- 2.d8B#
- 1...Rxe2
- 2.d8Q#
- 2.d8B#
- 1...Rxa3
- 2.d8Q#
- 2.d8B#
- 1...Rxf3
- 2.d8Q#
- 2.d8B#
- 1...Rxa4
- 2.d8Q#
- 2.d8B#
- 1...gxf2
- 2.d8Q#
- 2.d8B#
- 1...d1Q
- 2.d8Q#
- 2.d8B#
- 1...d1S
- 2.Qh1#
- 2.d8Q#
- 2.d8B#
- 1...d1B
- 2.Qh1#
- 2.d8Q#
- 2.d8B#
- 1...d1R
- 2.d8Q#
- 2.d8B#
- 1...Qb2
- 2.Qh1#
- 2.d8Q#
- 2.d8B#
- 1...Qa1
- 2.d8Q#
- 2.d8B#
- 1...Qb1
- 2.d8Q#
- 2.d8B#
- 1...Qd1
- 2.d8Q#
- 2.d8B#
- 1...Qe1
- 2.d8Q#
- 2.d8B#
- 1...Qf1
- 2.d8Q#
- 2.d8B#
- 1...Qg1
- 2.d8Q#
- 2.d8B#
- 1...Qh1
- 2.Qxh1#
- 2.d8Q#
- 2.d8B#
- 1...Qc2
- 2.Qh1#
- 2.d8Q#
- 2.d8B#
- 1...Qc3
- 2.Qh1#
- 2.d8Q#
- 2.d8B#
- 1...Qc4
- 2.Qh1#
- 1...Rb3
- 2.d8Q#
- 2.d8B#
- 1...Rc3
- 2.d8Q#
- 2.d8B#
- 1...Rd3
- 2.d8Q#
- 2.d8B#
- 1...Ree4
- 2.Qxg3#
- 1...Rb4
- 2.d8Q#
- 2.d8B#
- 1...Rc4
- 2.d8Q#
- 2.d8B#
- 1...Rde4
- 2.d8Q#
- 2.d8B#
- 1...Rf4
- 2.d8Q#
- 2.d8B#
- 1...Rg4
- 2.d8Q#
- 2.d8B#
- 1...g2
- 2.d8Q#
- 2.d8B#
- 1...c4
- 2.Be7#
- 1...e4
- 2.Qf4#
- 1...f4
- 2.Qg4#
- threat
- 1.d7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD::QAR(D)
- Q(a);N_GUARD,XB(C)::QAR(D)
- Q(a);N_GUARD::QAR(D),XQ(a)
- Q(a);N_GUARD,N_SPINR(e)::QAR(D)
- R(c);N_GUARD,N_SPINR(e)::QAB1(D),XP(d)
- P(b);S_CUTQ(a)::QAR(D)
- P(h);N_GUARD,N_SPINR(e),S_CUTR(e)::QAR2(D)
- P(i);N_GUARD,N_SPINR(e),S_CUTR(e)::QAR1(D)
- Tries
- Try
- S(A);XR(e)
- Threat
- R(E)+S(A),DCHECK,XP(i)
- Vars
- P(h);N_GUARD,P_SPINP(h),XS(A)::QAR2(D)
- Refutation
- P(g);P_SPINP(g),XS(A)
- Try
- R(E);CHECK,XR(e)
- Vars
- R(c);P_SPINR(c)::QAB1(D),XP(d)
- P(h);N_GUARD,XR(E)::QAR2(D)
- P(h);N_GUARD,P_SPINP(h)::QAR2(D)
- P(i);N_GUARD,P_SPINP(i)::QAR1(D)
- Refutation
- P(g);XR(E)
- Try
- Q(D);XP(i)
- Threat
- DUALS(3)
- Refutation
- P(d);XS(B)
- Try
- Actual
- P(G);
- Threat
- P=Q
- Vars
- R(c);XS(A)::P=Q
- R(c);XB(C)::P=Q
- R(c);XQ(D)::P=Q
- R(e);N_SPINR(e),SBLOCK,XR(E)::P=Q
- P(d);XS(B)::P=Q
- P(b);::P=Q
- Q(a);::P=Q
- Q(a);N_GUARD,N_SPINR(e)::QAR(D)
- R(c);::P=Q
- R(c);N_GUARD,N_SPINR(e)::QAB1(D),XP(d)
- R(e);::P=Q
- P(d);::P=Q
- P(g);N_SPINR(e),OGATE::B(C)
- P(h);N_GUARD,N_SPINR(e),S_CUTR(e)::QAR2(D)
- P(i);N_GUARD,N_SPINR(e),S_CUTR(e)::QAR1(D)
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).