MESON Chess Problem Database
Problem Display
PID: 21207 (1B1N4/2rp1R1b/3k1nn1/R5p1/2p1p2q/2K1N1r1/3P3Q/8 w - - 0 1)
Guidelli, Giorgio
3rd Prize, Good Companions (November), 1917
#2
8 + 11
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Sg4
- 2.Rd5#
- 1...Sd5+
- 2.Rxd5#
- 1...Sh5
- 2.Rd5#
- 1...Se8
- 2.Rd5#
- 1...Sg8
- 2.Rd5#
- 1...Se7
- 2.Rxf6#
- 1...Sg4
- Tries
- 1.Kc2?
- threat
- 2.Sxc4#
- 2.Sf5#
- 1...Sd5
- 2.Sxc4#
- 2.Rxd5#
- 1...Qh3
- 2.Sxc4#
- 1...Qf4
- 2.Sxc4#
- 1...Qg4
- 2.Sxc4#
- 1...Sf4
- 2.Sxc4#
- 1...Se7
- 2.Sxc4#
- 2.Rxf6#
- 1...Sf8
- 2.Sxc4#
- 1...Sh8
- 2.Sxc4#
- 1...c3
- 2.Sc4#
- 2.Sf5#
- 1...Se5!
- threat
- 1.Kb4?
- threat
- 2.Sxc4#
- 2.Sf5#
- 1...Sd5+
- 2.Rxd5#
- 1...Qh3
- 2.Sxc4#
- 1...Qf4
- 2.Sxc4#
- 1...Qg4
- 2.Sxc4#
- 1...Sf4
- 2.Sxc4#
- 1...Se7
- 2.Sxc4#
- 2.Rxf6#
- 1...Sf8
- 2.Sxc4#
- 1...Sh8
- 2.Sxc4#
- 1...c3
- 2.Sc4#
- 2.Sf5#
- 1...Se5!
- threat
- 1.Kd4?
- threat
- 2.Sxc4#
- 2.Sf5#
- 2.Ra6#
- 1...Qh3
- 2.Sxc4#
- 2.Ra6#
- 1...Qf4
- 2.Sxc4#
- 2.Ra6#
- 1...Qg4
- 2.Sxc4#
- 2.Ra6#
- 1...Sd5
- 2.Sxc4#
- 2.Sf5#
- 2.Rxd5#
- 1...Sf4
- 2.Sxc4#
- 2.Ra6#
- 1...Se7
- 2.Sxc4#
- 2.Rxf6#
- 1...Sf8
- 2.Sxc4#
- 2.Ra6#
- 1...Sh8
- 2.Sxc4#
- 2.Ra6#
- 1...c3
- 2.Sc4#
- 2.Sf5#
- 2.Ra6#
- 1...Se5!
- threat
- 1.Qxg3+?
- 1...Qf4
- 2.Sxc4#
- 2.Sf5#
- 1...Sf4
- 2.Sxc4#
- 1...Se5
- 2.Sxc4#
- 2.Qxe5#
- 1...Qxg3!
- 1...Qf4
- 1.d3?
- threat
- 2.Sxc4#
- 2.Sf5#
- 1...Sd5+
- 2.Rxd5#
- 1...cxd3+
- 2.Sc4#
- 1...exd3
- 2.Sf5#
- 1...Qh3
- 2.Sxc4#
- 1...Qf4
- 2.Sxc4#
- 1...Qg4
- 2.Sxc4#
- 1...Sf4
- 2.Sxc4#
- 1...Se7
- 2.Sxc4#
- 2.Rxf6#
- 1...Sf8
- 2.Sxc4#
- 1...Sh8
- 2.Sxc4#
- 1...Se5!
- threat
- 1.Kc2?
- Keys
- 1.d4!
- threat
- 2.Ra6#
- 1...Sd5+
- 2.Rxd5#
- 1...cxd4 ep+
- 2.Sc4#
- 1...exd4 ep
- 2.Sf5#
- 1...Se5
- 2.dxe5#
- 1...Se7
- 2.Rxf6#
- threat
- 1.d4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- S(g);N_GUARD::R1(E)
- S(g);CHECK,N_GUARD::R1(E),XS(g)
- S(h);SBLOCK::R(F),XS(g)
- Tries
- Try
- K(C);N_SPINS(D),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(d);::S(D),XP(b)
- Q(d);N_SPINR(a),P_SPINR(i)::S(D),XP(b)
- S(h);N_SPINR(a),P_SPINR(i)::S(D),XP(b)
- S(h);::S(D),XP(b)
- Refutation
- S(h);N_SPINR(a),P_SPINR(i)
- Try
- K(C);N_SPINS(D),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- S(g);CHECK,N_GUARD::R1(E),XS(g)
- Q(d);::S(D),XP(b)
- Q(d);N_SPINR(a),P_SPINR(i)::S(D),XP(b)
- S(h);N_SPINR(a),P_SPINR(i)::S(D),XP(b)
- S(h);::S(D),XP(b)
- Refutation
- S(h);N_SPINR(a),P_SPINR(i)
- Try
- K(C);N_SPINS(D),S_FLIGHT
- Threat
- DUALS(3)
- Refutation
- S(h);N_SPINR(a),P_SPINR(i)
- Try
- Q(B);CHECK,N_SPINS(D),P_PINR(i),XR(a)
- Vars
- S(h);P_SPINS(h)::S(D),XP(b)
- Refutation
- Q(d);P_PINS(D),XQ(B)
- Try
- P(A);N_SPINS(D)
- Threat
- DUALS(2)
- Vars
- S(g);CHECK,N_GUARD::R1(E),XS(g)
- P(b);CHECK,XP(A)::S(D)
- P(c);XP(A)::S(D)
- Q(d);::S(D),XP(b)
- Q(d);N_SPINR(a),P_SPINR(i)::S(D),XP(b)
- S(h);N_SPINR(a),P_SPINR(i)::S(D),XP(b)
- S(h);::S(D),XP(b)
- Refutation
- S(h);N_SPINR(a),P_SPINR(i)
- Try
- Actual
- P(A);
- Threat
- R(E)
- Vars
- S(g);CHECK,N_GUARD::R1(E),XS(g)
- P(b);CHECK,EP,N_PINS(D),XP(A)::S(D)
- P(c);EP,N_PINS(D),XP(A)::S(D)
- S(h);N_SPINR(a),OGATE,P_SPINR(i)::P(A),XS(h)
- S(h);SBLOCK::R(F),XS(g)
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).