MESON Chess Problem Database
Problem Display
PID: 100949 (4R2b/K1Qp2n1/p2N3q/2p1prpb/1NPk4/5P2/3B1P2/nr1R1B2 w - - 0 1)
Fontana, Alessandro
Good Companions, 1919
#2
11 + 13
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxd6
- 2.Qxd6#
- 1...Rxb4
- 2.Be1#
- 2.Bxb4#
- 1...Sc2
- 2.Sxc2#
- 1...Sb3
- 2.Sc2#
- 1...Se6
- 2.Sxf5#
- 1...Sxe8
- 2.Sxf5#
- 1...cxb4
- 2.Qb6#
- 1...e4
- 2.Rxe4#
- 1...a5
- 2.Sb5#
- 1...Qxd6
- Tries
- 1.Sa2?
- threat
- 2.Bc1#
- 2.Bc3#
- 2.Be3#
- 1...Rxd1
- 2.Bc3#
- 2.Be3#
- 1...Rxf3
- 2.Bc3#
- 2.Be3#
- 1...Bxf3
- 2.Bc3#
- 2.Be3#
- 1...Rc1
- 2.Bxc1#
- 2.Bc3#
- 2.Be3#
- 1...Rb2
- 2.Bc3#
- 2.Be3#
- 1...Rb3
- 2.Bc3#
- 2.Be3#
- 1...Sb3
- 2.Bc3#
- 2.Be3#
- 1...g4
- 2.Bc3#
- 2.Be3#
- 1...Rb7+!
- threat
- 1.Sd5?
- threat
- 2.Bc1#
- 2.Bc3#
- 2.Be3#
- 1...Rxd1
- 2.Bc3#
- 2.Be3#
- 1...Rxf3
- 2.Bc3#
- 2.Be3#
- 1...Bxf3
- 2.Bc3#
- 2.Be3#
- 1...Rc1
- 2.Bxc1#
- 2.Bc3#
- 2.Be3#
- 1...Rb2
- 2.Bc3#
- 2.Be3#
- 1...Rb3
- 2.Bc3#
- 2.Be3#
- 1...Sb3
- 2.Bc3#
- 2.Be3#
- 1...g4
- 2.Bc3#
- 2.Be3#
- 1...Rb7+!
- threat
- 1.Sxa6?
- threat
- 2.Qxc5#
- 1...Qxd6
- 2.Qxd6#
- 1...Rb5
- 2.Sxb5#
- 2.Be1#
- 2.Bb4#
- 2.Ba5#
- 1...Sb3
- 2.Sb5#
- 1...Se6
- 2.Sxf5#
- 1...e4
- 2.Rxe4#
- 1...Rb7+!
- threat
- 1.Rc8?
- threat
- 2.Qxc5#
- 1...Qxd6
- 2.Qxd6#
- 1...cxb4
- 2.Qb6#
- 2.Qc5#
- 1...Sb3
- 2.Sc2#
- 1...Se6
- 2.Sxf5#
- 1...e4!
- threat
- 1.Qc6?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...Qxd6
- 2.Qe4#
- 2.Qxd6#
- 1...cxb4
- 2.Qd5#
- 2.Qb6#
- 1...dxc6
- 2.Sxc6#
- 1...Qe6
- 2.Qe4#
- 1...Rf4
- 2.Qd5#
- 1...Bf7
- 2.Qe4#
- 1...e4
- 2.Rxe4#
- 2.Qxe4#
- 1...Bxf3!
- threat
- 1.Qb7?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...Qxd6
- 2.Qe4#
- 1...cxb4
- 2.Qd5#
- 2.Qb6#
- 1...Qe6
- 2.Qe4#
- 1...Rf4
- 2.Qd5#
- 1...Bf7
- 2.Qe4#
- 1...e4
- 2.Rxe4#
- 2.Qxe4#
- 1...Bxf3!
- threat
- 1.Sa2?
- Keys
- 1.Kb6!
- threat
- 2.Qxc5#
- 1...Qxd6+
- 2.Qxd6#
- 1...Rxb4+
- 2.Bxb4#
- 1...cxb4
- 2.Qc5#
- 1...Sb3
- 2.Sc2#
- 1...Se6
- 2.Sxf5#
- 1...e4
- 2.Rxe4#
- threat
- 1.Kb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- Q(j);OGATE,XS(H)::QAR2(J),XQ(j)
- S(a);N_GUARD::S(F),XS(a)
- S(a);N_GUARD::S(F)
- S(l);N_GUARD::S(H),XR(f)
- S(l);N_GUARD,XR(K)::S(H),XR(f)
- P(d);OGATEB,XS(F)::QAB(J)
- P(e);OGATE::R1(K),XP(e)
- P(i);N_GUARD::S(H)
- Tries
- Try
- S(F);
- Threat
- DUALS(3)
- Refutation
- R(b);CHECK
- Try
- S(F);
- Threat
- DUALS(3)
- Refutation
- R(b);CHECK
- Try
- S(F);XP(i)
- Threat
- QAB1(J),XP(d)
- Vars
- Q(j);OGATE,XS(H)::QAR2(J),XQ(j)
- S(a);S_CUTR(b)::S(H)
- S(l);N_GUARD::S(H),XR(f)
- P(e);OGATE::R1(K),XP(e)
- Refutation
- R(b);CHECK
- Try
- R(K);
- Threat
- QAB1(J),XP(d)
- Vars
- Q(j);OGATE,XS(H)::QAR2(J),XQ(j)
- S(a);N_GUARD::S(F)
- S(l);N_GUARD::S(H),XR(f)
- Refutation
- P(e);
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- P(k);XQ(J)::S(F),XP(k)
- Q(j);::QAR1(J)
- R(f);::QAR1(J)
- B(h);::QAR1(J)
- Refutation
- B(h);XP(E)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- Q(j);XS(H)::QAR1(J)
- Q(j);::QAR1(J)
- R(f);::QAR1(J)
- B(h);::QAR1(J)
- Refutation
- B(h);XP(E)
- Try
- Actual
- K(I);P_SPINS(F),S_FLIGHT
- Threat
- QAB1(J),XP(d)
- Vars
- Q(j);CHECK,OGATE,XS(H)::QAR2(J),XQ(j)
- R(b);CHECK,OGATE,P_PINS(H),XS(F)::R(A)+B(C),XR(b)
- P(d);P_PINS(H),XS(F)::QAB1(J)
- S(a);N_PINS(F),P_PINS(H)::S(F)
- S(l);::S(H),XR(f)
- P(e);OGATE::R1(K),XP(e)
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).