MESON Chess Problem Database
Problem Display
PID: 157149 (8/3KBp2/2P2p2/3k4/4R3/5p2/1NQbb3/8 w - - 0 1)
Cristoffanini, Guido
Il Secolo, 1925
#2
6 + 6
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Qd3#
- 2.Qc4#
- 1...Bd3
- 2.Qxd3#
- 1...Bc4
- 2.Qxc4#
- 1...Bd1
- Tries
- 1.Sd3?
- threat
- 2.Qc4#
- 1...Bxd3
- 2.Qxd3#
- 1...Bc3
- 2.Sf4#
- 1...Kxe4!
- threat
- 1.Sa4?
- threat
- 2.Sb6#
- 1...Bd3
- 2.Qxd3#
- 1...Be3
- 2.Sc3#
- 1...Ba5!
- threat
- 1.Re3?
- threat
- 2.Qe4#
- 2.Qc5#
- 1...Kd4
- 2.Qe4#
- 2.Qc5#
- 1...Bc3
- 2.Qe4#
- 1...Bb4
- 2.Qe4#
- 1...Bd3
- 2.Qxd3#
- 2.Qc5#
- 1...Bc4
- 2.Qe4#
- 2.Qxc4#
- 1...f5
- 2.Qc5#
- 1...Bxe3!
- threat
- 1.Rd4+?
- 1...Ke5
- 2.Qe4#
- 2.Qc5#
- 1...Kxd4!
- 1...Ke5
- 1.Rf4?
- threat
- 2.Qe4#
- 2.Qf5#
- 2.Qc5#
- 1...Ke5
- 2.Qe4#
- 2.Qf5#
- 1...Bc3
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 2.Qf5#
- 1...Bb4
- 2.Qe4#
- 2.Qf5#
- 1...Bd3
- 2.Qc5#
- 1...Bc4
- 2.Qe4#
- 2.Qf5#
- 1...f5
- 2.Qxf5#
- 2.Qc5#
- 1...Bxf4!
- threat
- 1.Rg4?
- threat
- 2.Qe4#
- 2.Qf5#
- 2.Qc5#
- 1...Ke5
- 2.Qe4#
- 2.Qc5#
- 1...Bc3
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 2.Qf5#
- 1...Bb4
- 2.Qe4#
- 2.Qf5#
- 1...Bd3
- 2.Qc5#
- 1...Bc4
- 2.Qe4#
- 2.Qf5#
- 1...f5
- 2.Qxf5#
- 2.Qc5#
- 1...Bf4!
- threat
- 1.Rh4?
- threat
- 2.Qe4#
- 2.Qf5#
- 2.Qc5#
- 1...Ke5
- 2.Qe4#
- 2.Qc5#
- 1...Bc3
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 2.Qf5#
- 1...Bb4
- 2.Qe4#
- 2.Qf5#
- 1...Bd3
- 2.Qc5#
- 1...Bc4
- 2.Qe4#
- 2.Qf5#
- 1...f5
- 2.Qxf5#
- 2.Qc5#
- 1...Bf4!
- threat
- 1.Re6?
- threat
- 2.Qe4#
- 2.Qc5#
- 1...Kd4
- 2.Qc5#
- 1...Bc3
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 1...Bb4
- 2.Qe4#
- 1...Bd3
- 2.Qxd3#
- 2.Qc5#
- 1...Bc4
- 2.Qe4#
- 2.Qxc4#
- 1...f5
- 2.Qc5#
- 1...fxe6!
- threat
- 1.Qb3+?
- 1...Bc4
- 2.Qxc4#
- 1...Kxe4!
- 1...Bc4
- 1.Qxd2+?
- 1...Bd3
- 2.Qxd3#
- 1...Kxe4!
- 1...Bd3
- 1.Sd3?
- Keys
- 1.Sc4!
- threat
- 2.Sb6#
- 1...Bxc4
- 2.Qxc4#
- 1...Bd3
- 2.Qxd3#
- 1...Be3
- 2.Sxe3#
- 1...Ba5
- 2.Se3#
- threat
- 1.Sc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(b);N_GUARD::QAR2(B),XB(b)
- B(b);N_GUARD::QAB1(B),XB(b)
- Tries
- Try
- S(A);
- Threat
- QAB1(B)
- Vars
- B(b);OGATE,XS(A)::QAR2(B),XB(b)
- B(a);N_GUARD::S(A)
- Refutation
- K(d);S_FLIGHT,XR(C)
- Try
- S(A);
- Threat
- S(A)
- Vars
- B(b);N_GUARD::QAR2(B),XB(b)
- B(a);N_GUARD::S(A)
- Refutation
- B(a);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- B(a);::QAB1(B)
- P(e);::QAR1(B)
- Refutation
- B(a);XR(C)
- Try
- R(C);CHECK
- Refutation
- K(d);P-FLIGHT,XR(C)
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- B(a);::QAB1(B)
- B(b);::QAR1(B)
- Refutation
- B(a);XR(C)
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- B(a);::QAB1(B)
- B(b);::QAR1(B)
- Refutation
- B(a);
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- B(a);::QAB1(B)
- B(b);::QAR1(B)
- Refutation
- B(a);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- K(d);P-FLIGHT::QAB1(B)
- B(a);::QAB1(B)
- P(e);::QAR1(B)
- Refutation
- P(f);XR(C)
- Try
- Q(B);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAB1(B),XB(b)
- Refutation
- K(d);S_FLIGHT,XR(C)
- Try
- Q(B);CHECK,XB(a)
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR2(B),XB(b)
- Refutation
- K(d);S_FLIGHT,XR(C)
- Try
- Actual
- S(A);
- Threat
- S(A)
- Vars
- B(b);OGATE,XS(A)::QAB1(B),XB(b)
- B(b);N_GUARD::QAR2(B),XB(b)
- B(a);N_GUARD::S(A),XB(a)
- B(a);N_GUARD::S(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).