MESON Chess Problem Database
Problem Display
PID: 148835 (8/2pNp2K/1prnN3/1Rb2n1Q/1prpk3/1B1RP1B1/4P1b1/8 w - - 0 1)
Fontana, Don A
Good Companions (March), 1918
#2
10 + 12
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Sg5#
- 2.Qg4#
- 1...Rc2
- 2.Sg5#
- 2.Qg4#
- 1...Rc3
- 2.Sg5#
- 2.Qg4#
- 1...Bf1
- 2.Qf3#
- 1...Bh1
- 2.Qxh1#
- 1...Bf3
- 2.Qxf3#
- 1...Bh3
- 2.Qf3#
- 1...Sxe3
- 2.Qe5#
- 1...Sxg3
- 2.Qe5#
- 1...Sh4
- 2.Qe5#
- 1...Sh6
- 2.Qe5#
- 1...Sg7
- 2.Qe5#
- 1...dxe3
- 2.Sg5#
- 2.Qg4#
- 1...Rc1
- Tries
- 1.Sxd4?
- 1...Rxd4
- 2.Qg4#
- 1...Bxd4
- 2.Qg4#
- 1...Sxe3
- 2.Qe5#
- 1...Sxg3
- 2.Qe5#
- 1...Sxd4
- 2.Qe5#
- 1...Sxb5
- 2.Qxf5#
- 1...Rc1
- 2.Qg4#
- 1...Rc2
- 2.Qg4#
- 1...Rc3
- 2.Qg4#
- 1...Bf1
- 2.Qf3#
- 1...Bh1
- 2.Qxh1#
- 1...Bf3
- 2.Qxf3#
- 1...Bh3
- 2.Qf3#
- 1...Sh4
- 2.Qe5#
- 1...Sh6
- 2.Qe5#
- 1...Sg7
- 2.Qe5#
- 1...Sb7
- 2.Qxf5#
- 1...Sf7
- 2.Qxf5#
- 1...Sc8
- 2.Qxf5#
- 1...Se8
- 2.Qxf5#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...Kd5!
- 1...Rxd4
- 1.Sxc7?
- threat
- 2.Qg4#
- 1...Sxe3
- 2.Qe5#
- 1...Bf3
- 2.Qxf3#
- 1...Bh3
- 2.Qf3#
- 1...Sh6
- 2.Qd5#
- 2.Qe5#
- 1...Rxc7!
- threat
- 1.Bxc4?
- threat
- 2.Sg5#
- 2.Qg4#
- 1...Sxe3
- 2.Qe5#
- 1...Sxg3
- 2.Bd5#
- 2.Qg4#
- 2.Qd5#
- 2.Qe5#
- 1...Bf3
- 2.Sg5#
- 2.Qxf3#
- 2.exf3#
- 1...Bh3
- 2.Sg5#
- 2.Qf3#
- 1...Sh4
- 2.Bd5#
- 2.Qg4#
- 2.Qd5#
- 2.Qe5#
- 1...Sh6
- 2.Bd5#
- 2.Qd5#
- 2.Qe5#
- 1...Sg7
- 2.Bd5#
- 2.Qg4#
- 2.Qd5#
- 2.Qe5#
- 1...Sf7
- 2.Qg4#
- 1...Sxc4!
- threat
- 1.Sxd4?
- Keys
- 1.Sg7!
- 1...Kd5
- 2.Rxd4#
- 1...Sxe3
- 2.Qe5#
- 1...Sxg3
- 2.Qe5#
- 1...Sxg7
- 2.Qe5#
- 1...Sxb5
- 2.Qxf5#
- 1...dxe3
- 2.Qg4#
- 1...Rc1
- 2.Qg4#
- 1...Rc2
- 2.Qg4#
- 1...Rc3
- 2.Qg4#
- 1...Bf1
- 2.Qf3#
- 1...Bh1
- 2.Qxh1#
- 1...Bf3
- 2.Qxf3#
- 1...Bh3
- 2.Qf3#
- 1...Sh4
- 2.Qe5#
- 1...Sh6
- 2.Qe5#
- 1...Sb7
- 2.Qxf5#
- 1...Sf7
- 2.Qxf5#
- 1...Sc8
- 2.Qxf5#
- 1...Se8
- 2.Qxf5#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...Kd5
- 1.Sg7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::QAB1(G)
- B(a);OGATEB::QAB(G),XB(a)
- B(a);N_GUARD::QAB1(G),XB(a)
- S(g);OGATE,XP(D)::QAR1(G)
- S(g);OGATE,XB(E)::QAR1(G)
- S(g);OGATE::QAR1(G)
- Tries
- Try
- S(H);XP(d)
- Vars
- R(c);XS(H)::QAR2(G)
- B(f);XS(H)::QAR2(G)
- S(g);OGATE,XP(D)::QAR1(G)
- S(g);OGATE,XB(E)::QAR1(G)
- S(g);OGATE,XS(H)::QAR1(G)
- S(j);N_GUARD,XR(F)::QAB1(G),XS(g)
- R(c);::QAR2(G)
- B(a);N_GUARD::QAB1(G)
- B(a);OGATEB::QAB(G),XB(a)
- B(a);N_GUARD::QAB1(G),XB(a)
- S(g);OGATE::QAR1(G)
- S(j);N_GUARD::QAB1(G),XS(g)
- P(l);N_GUARD::S(I)
- Refutation
- K(e);P_SPINB(f),P_SPINR(c),P_SPINS(g),S_FLIGHT
- Try
- S(H);XP(k)
- Threat
- QAR2(G)
- Vars
- S(g);OGATE,XP(D)::QAR1(G)
- B(a);N_GUARD::QAB1(G),XB(a)
- B(a);N_GUARD::QAB1(G)
- Refutation
- R(i);XS(H)
- Try
- B(B);XR(c)
- Threat
- DUALS(2)
- Vars
- S(g);OGATE,XP(D)::QAR1(G)
- S(j);::QAR2(G)
- Refutation
- S(j);XB(B)
- Try
- Actual
- S(H);
- Vars
- K(e);P_SPINB(f),P_SPINP(d),P_SPINR(c),P_SPINS(g),S_FLIGHT::R1(C),XP(d)
- S(g);OGATE,XP(D)::QAR1(G)
- S(g);OGATE,XB(E)::QAR1(G)
- S(g);OGATE,XS(H)::QAR1(G)
- S(j);N_GUARD,XR(F)::QAB1(G),XS(g)
- P(d);XP(D)::QAR2(G)
- R(c);::QAR2(G)
- B(a);N_GUARD::QAB1(G)
- B(a);OGATEB::QAB(G),XB(a)
- B(a);N_GUARD::QAB1(G),XB(a)
- S(g);OGATE::QAR1(G)
- S(j);N_GUARD::QAB1(G),XS(g)
- P(l);N_GUARD::S(I)
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).