MESON Chess Problem Database
Problem Display
PID: 109700 (2Qrb3/7q/4B3/3R2BR/2N1k3/n7/6K1/1n6 w - - 0 1)
Ghirelli, Bruno
Witte, Alberto
Il Due Mosse, 1954
#2
7 + 6
| 1077 | Boletim da UBP | 1990 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qg6
- 2.Rh4#
- 1...Qg8
- 2.Rh4#
- 1...Qa7
- 2.Rh4#
- 1...Qb7
- 2.Rh4#
- 1...Qd7
- 2.Rh4#
- 1...Qe7
- 2.Rh4#
- 1...Qg7
- 2.Rh4#
- 1...Rd6
- 2.Sxd6#
- 1...Rxc8
- 2.Sd6#
- 1...Bd7
- 2.Sd6#
- 1...Sd2
- 2.Sxd2#
- 1...Sc3
- 2.Sd2#
- 1...Sxc4
- 2.Qxc4#
- 1...Qg6
- Tries
- 1.Bf5+?
- 1...Qxf5
- 2.Qxf5#
- 1...Kxd5!
- 1...Qxf5
- 1.Qc5?
- threat
- 2.Qe3#
- 2.Qd4#
- 1...Rxd5
- 2.Qe3#
- 2.Qxd5#
- 1...Sxc4
- 2.Qd4#
- 2.Qxc4#
- 1...Qa7
- 2.Bf5#
- 2.Rh4#
- 1...Qg7
- 2.Bf5#
- 2.Rh4#
- 2.Qe3#
- 1...Qh8
- 2.Bf5#
- 2.Qe3#
- 1...Sb5
- 2.Qe3#
- 1...Sc2!
- threat
- 1.Qc6?
- threat
- 2.Rd7#
- 1...Rxd5
- 2.Qxd5#
- 1...Sxc4
- 2.Qxc4#
- 1...Qf5
- 2.Bxf5#
- 1...Qb7
- 2.Bf5#
- 2.Rh4#
- 1...Qc7
- 2.Bf5#
- 1...Qd7
- 2.Rxd7#
- 2.Rh4#
- 1...Rd6
- 2.Sxd6#
- 1...Rd7
- 2.Rd6#
- 2.Rxd7#
- 1...Rc8
- 2.Sd6#
- 1...Bd7
- 2.Sd6#
- 2.Rxd7#
- 1...Sc3
- 2.Sd2#
- 1...Bxc6!
- threat
- 1.Qxd8?
- threat
- 2.Sd6#
- 2.Rd4#
- 2.Re5#
- 1...Qf5
- 2.Sd6#
- 2.Bxf5#
- 2.Rd4#
- 1...Qa7
- 2.Sd6#
- 2.Bf5#
- 2.Re5#
- 2.Rh4#
- 1...Qc7
- 2.Bf5#
- 2.Rd4#
- 1...Qd7
- 2.Rh4#
- 1...Qe7
- 2.Bf5#
- 2.Rd4#
- 2.Re5#
- 2.Rh4#
- 1...Qg7
- 2.Sd6#
- 2.Bf5#
- 2.Rh4#
- 1...Qh8
- 2.Sd6#
- 2.Bf5#
- 1...Bd7
- 2.Sd6#
- 1...Sc2
- 2.Sd6#
- 2.Re5#
- 1...Sb5
- 2.Re5#
- 1...Sxc4!
- threat
- 1.Bf5+?
- Keys
- 1.Qb7!
- threat
- 2.Rd7#
- 1...Qxb7
- 2.Rh4#
- 1...Rxd5
- 2.Qxd5#
- 1...Sxc4
- 2.Qxb1#
- 1...Qf5
- 2.Bxf5#
- 1...Qc7
- 2.Bf5#
- 1...Qd7
- 2.Rxd7#
- 2.Rh4#
- 1...Rd6
- 2.Sxd6#
- 1...Rd7
- 2.Rxd7#
- 1...Rb8
- 2.Sd6#
- 1...Rc8
- 2.Sd6#
- 1...Ba4
- 2.Qxh7#
- 1...Bb5
- 2.Qxh7#
- 1...Bc6
- 2.Qxh7#
- 1...Bd7
- 2.Sd6#
- 2.Rxd7#
- 1...Sc3
- 2.Sd2#
- threat
- 1.Qb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 8
- REMOVED MATES = 8
- Sets
- Q(d);N_GUARD,P_PINB(D)::R(E)
- Q(d);N_GUARD::R(E)
- R(e);N_GUARD::S(B),XR(e)
- R(e);N_GUARD,XQ(G)::S(B)
- B(f);S_CUTR(e)::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(a);N_GUARD::S(B)
- S(b);OGATE,XS(B)::QAR2(G),XS(b)
- Tries
- Try
- B(F);CHECK
- Vars
- Q(d);OGATE,XB(F)::QAB1(G),XQ(d)
- Refutation
- K(c);S_FLIGHT,XR(C)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- S(b);::QAR1(G)
- Refutation
- S(b);
- Try
- Q(G);
- Threat
- QAB(G)+R(C)
- Vars
- R(e);OGATE,P_SPINR(e),XR(C)::QAB1(G),XR(e)
- S(b);OGATE,XS(B)::QAR2(G),XS(b)
- Q(d);N_GUARD::B(F),XQ(d)
- Q(d);N_GUARD::B(F)
- R(e);N_GUARD::S(B),XR(e)
- R(e);N_GUARD::S(B)
- S(a);N_GUARD::S(B)
- Refutation
- B(f);XQ(G)
- Try
- Q(G);XR(e)
- Threat
- DUALS(3)
- Vars
- Q(d);N_GUARD::R(E)
- B(f);::S(B)
- S(b);::R1(C)
- Refutation
- S(b);XS(B)
- Try
- Actual
- Q(G);
- Threat
- QAB(G)+R(C)
- Vars
- Q(d);N_GUARD,XQ(G)::R(E)
- R(e);OGATE,P_SPINR(e),XR(C)::QAB1(G),XR(e)
- S(b);N_GUARD,XS(B)::QAB(G),XS(a)
- Q(d);N_GUARD::B(F),XQ(d)
- Q(d);N_GUARD::B(F)
- R(e);N_GUARD::S(B),XR(e)
- R(e);::QAB(G)+R(C),XR(e)
- R(e);N_GUARD::S(B)
- B(f);N_GUARD::QAB(G),XQ(d)
- S(a);N_GUARD::S(B)
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).