MESON Chess Problem Database
Problem Display
PID: 107970 (8/1b2n3/3R1p1Q/1pN5/qP4p1/2r2kbP/2B5/2B2K1N w - - 0 1)
di Scala, Pascal
Slovensky Dennik, 1992
#2
9 + 9
| 702 | Phenix | 1996 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Bd1#
- 1...Qa3
- 2.Bd1#
- 1...Qxb4
- 2.Bd1#
- 1...Qa5
- 2.Bd1#
- 1...Qa6
- 2.Bd1#
- 1...Qa7
- 2.Bd1#
- 1...Qa8
- 2.Bd1#
- 1...Rxc2
- 2.Rd3#
- 2.Qe3#
- 1...Rb3
- 2.Bd1#
- 1...Rd3
- 2.Rxd3#
- 1...Re3
- 2.Qxe3#
- 1...Rc4
- 2.Rd3#
- 2.Qe3#
- 1...Rxc5
- 2.Qe3#
- 1...Be1
- 2.Qf4#
- 1...Bf2
- 2.Qf4#
- 1...Bf4
- 2.Qxf4#
- 1...Bh4
- 2.Qf4#
- 1...Be4
- 2.Bxe4#
- 1...Ba6
- 2.Be4#
- 1...Bc8
- 2.Be4#
- 1...Sd5
- 2.Be4#
- 1...Sc6
- 2.Be4#
- 1...gxh3
- 2.Qh5#
- 1...Qa1
- Tries
- 1.Rxf6+?
- 1...Bf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Sf5!
- 1...Bf4
- 1.Qd2?
- threat
- 2.Qxc3#
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 1...Qxb4
- 2.Bd1#
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 1...Rxc2
- 2.Rd3#
- 2.Qe3#
- 2.Qd3#
- 1...Rxc5
- 2.Qe3#
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 2.Qd3#
- 1...gxh3
- 2.Qd1#
- 2.Qe2#
- 1...Re3
- 2.Qxe3#
- 1...Qb3
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 1...Qa1
- 2.Bd1#
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 1...Qa3
- 2.Bd1#
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 1...Ra3
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 1...Rb3
- 2.Bd1#
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 1...Rd3
- 2.Rxd3#
- 2.Qe2#
- 2.Qg2#
- 2.Qxd3#
- 1...Rc4
- 2.Rd3#
- 2.Qe3#
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 2.Qd3#
- 1...Be1
- 2.Qf4#
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 1...Bf2
- 2.Qf4#
- 2.Qd1#
- 2.Qe2#
- 2.Qxf2#
- 1...Bf4
- 2.Qxf4#
- 2.Qd1#
- 2.Qe2#
- 2.Qf2#
- 2.Qg2#
- 1...Be5
- 2.Qd1#
- 2.Qe2#
- 2.Qf2#
- 2.Qg2#
- 1...Be4
- 2.Bxe4#
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 1...Sd5
- 2.Be4#
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 1...Sf5
- 2.Qd1#
- 2.Qe2#
- 2.Qg2#
- 1...Qxc2!
- threat
- 1.Qh4?
- threat
- 2.Qxg3#
- 2.Qxg4#
- 1...Qxb4
- 2.Bd1#
- 2.Qxg3#
- 1...Bxd6
- 2.Qf2#
- 2.Qxg4#
- 1...gxh3
- 2.Qxg3#
- 2.Qh5#
- 1...Rc4
- 2.Rd3#
- 2.Qxg3#
- 1...Be1
- 2.Qxg4#
- 1...Bf2
- 2.Qxf2#
- 2.Qxg4#
- 1...Bh2
- 2.Qf2#
- 2.Qxg4#
- 1...Bf4
- 2.Qf2#
- 2.Qxg4#
- 1...Be5
- 2.Qf2#
- 2.Qxg4#
- 1...Bc8
- 2.Be4#
- 2.Qxg3#
- 1...Sf5
- 2.Qxg4#
- 1...f5
- 2.Qxg3#
- 1...Bxh4!
- threat
- 1.Qh5?
- threat
- 2.Qxg4#
- 1...Qxb4
- 2.Bd1#
- 1...Rc4
- 2.Rd3#
- 1...Bc8
- 2.Be4#
- 1...f5!
- threat
- 1.Qxf6+?
- 1...Bf4
- 2.Qxf4#
- 1...Sf5!
- 1...Bf4
- 1.Rxf6+?
- Keys
- 1.Qg7!
- threat
- 2.Qxg4#
- 1...Qxb4
- 2.Bd1#
- 1...gxh3
- 2.Qxg3#
- 1...Rc4
- 2.Rd3#
- 1...Bc8
- 2.Be4#
- 1...Sg6
- 2.Qxb7#
- 1...f5
- 2.Qxc3#
- threat
- 1.Qg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 18
- Sets
- Q(d);N_GUARD,P_PINB(A)::B(D)
- Q(d);N_GUARD::B(D)
- Q(d);N_GUARD,XP(F)::B(D)
- R(a);S_CUTQ(d)::B(D)
- R(a);N_GUARD::R(H),XR(a)
- R(a);N_GUARD::QAR1(I),XR(a)
- R(a);N_GUARD,XS(G)::QAR1(I)
- B(c);N_GUARD::QAR1(I)
- B(c);N_GUARD::QAR1(I),XB(c)
- B(h);N_GUARD::B(D),XB(h)
- B(h);N_GUARD::B(D)
- S(i);S_CUTB(h)::B(D)
- P(e);OGATEB,XP(E)::QAB(I)
- Tries
- Try
- R(H);CHECK,XP(g)
- Refutation
- S(i);P_SPINS(i)
- Try
- Q(I);
- Threat
- DUALS(4)
- Vars
- R(a);N_GUARD::QAR1(I),XR(a)
- Refutation
- Q(d);XB(D)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- B(c);::QAB1(I),XP(e)
- S(i);::QAB1(I),XP(e)
- P(g);::QAR1(I),XB(c)
- Refutation
- B(c);XQ(I)
- Try
- Q(I);P_PINP(e)
- Threat
- QAB1(I),XP(e)
- Vars
- Q(d);N_GUARD,XP(F)::B(D)
- R(a);N_GUARD::R(H)
- B(h);N_GUARD::B(D)
- Refutation
- P(g);
- Try
- Q(I);CHECK,XP(g)
- Vars
- B(c);N_GUARD,P_SPINB(c)::QAR1(I),XB(c)
- Refutation
- S(i);P_SPINS(i)
- Try
- Actual
- Q(I);
- Threat
- QAB1(I),XP(e)
- Vars
- Q(d);N_GUARD,XP(F)::B(D)
- P(e);OGATE,XP(E)::QAR1(I),XB(c)
- R(a);N_GUARD::R(H)
- B(h);N_GUARD::B(D)
- S(i);OGATE::QAB(I),XB(h)
- P(g);OGATE::QAR(I),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).