MESON Chess Problem Database
Problem Display
PID: 204350 (6K1/8/pnR1N3/rk2N1R1/p7/Pb1q4/2r5/1Q2nB2 w - - 0 1)
Howard, Kenneth Samuel
Comm., Centurini/Guidelli MT, 1925
#2
8 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.Rc5#
- 1...Ra2
- 2.Rc5#
- 1...Rb2
- 2.Rc5#
- 1...Rd2
- 2.Rc5#
- 1...Re2
- 2.Rc5#
- 1...Rf2
- 2.Rc5#
- 1...Rg2
- 2.Rc5#
- 1...Rh2
- 2.Rc5#
- 1...Rc4
- 2.Sc7#
- 1...Rc5
- 2.Rxc5#
- 1...Sc4
- 2.Sc7#
- 1...Sd5
- 2.Sd4#
- 1...Qc4
- Tries
- 1.Kg7?
- threat
- 2.Sd4#
- 2.Sc7#
- 1...Re2
- 2.Sc7#
- 2.Rc5#
- 1...Rc4
- 2.Sc7#
- 1...Sf3
- 2.Sc7#
- 1...Sc4
- 2.Sc7#
- 1...Sd5
- 2.Sd4#
- 1...Sa8
- 2.Sd4#
- 1...Rxc6!
- threat
- 1.Sxd3+?
- 1...Rc5
- 2.Rgxc5#
- 2.Rcxc5#
- 1...Sd5
- 2.Sd4#
- 1...Kxc6!
- 1...Rc5
- 1.Sf3+?
- 1...Rc5
- 2.Rgxc5#
- 2.Rcxc5#
- 1...Sd5
- 2.Sfd4#
- 2.Sed4#
- 1...Kxc6!
- 1...Rc5
- 1.Sc4+?
- 1...Qf5
- 2.Sd4#
- 2.Rxb6#
- 1...Qd5
- 2.Rxb6#
- 1...Sd5
- 2.Rc5#
- 1...Kxc6!
- 1...Qf5
- 1.Sg4+?
- 1...Rc5
- 2.Rgxc5#
- 2.Rcxc5#
- 1...Sd5
- 2.Sd4#
- 1...Kxc6!
- 1...Rc5
- 1.Sg6+?
- 1...Rc5
- 2.Rgxc5#
- 2.Rcxc5#
- 1...Sd5
- 2.Sd4#
- 1...Kxc6!
- 1...Rc5
- 1.Sd7+?
- 1...Rc5
- 2.Rgxc5#
- 2.Rcxc5#
- 1...Sd5
- 2.Sd4#
- 1...Kxc6!
- 1...Rc5
- 1.Sf7+?
- 1...Rc5
- 2.Rgxc5#
- 2.Rcxc5#
- 1...Sd5
- 2.Sd4#
- 1...Kxc6!
- 1...Rc5
- 1.Bxd3+?
- 1...Rc4
- 2.Sd4#
- 2.Sc7#
- 2.Rc5#
- 1...Sc4
- 2.Sd4#
- 2.Sc7#
- 1...Sxd3!
- 1...Rc4
- 1.Kg7?
- Keys
- 1.Rg4!
- threat
- 2.Rb4#
- 1...Qc4
- 2.Rc5#
- 1...Rg2
- 2.Rc5#
- 1...Rc4
- 2.Sc7#
- 1...Sc4
- 2.Sc7#
- 1...Sd5
- 2.Sd4#
- threat
- 1.Rg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- Q(d);S_CUTR(b)::R1(F)
- R(b);N_GUARD::R1(F)
- R(b);N_GUARD,N_SPINB(c)::R1(F)
- R(b);N_GUARD,N_SPINQ(d)::R1(F)
- R(b);N_GUARD,P_PINR(E)::R1(F)
- R(b);N_PINS(G),N_SPINQ(d)::S(G)
- R(b);N_GUARD::R1(F),XR(b)
- S(i);N_PINS(G),N_SPINQ(d)::S(G)
- S(i);N_PINS(G)::S(G)
- Tries
- Try
- K(H);N_SPINS(G),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(b);N_SPINQ(d)::S(G)
- S(a);::S(G)
- S(i);N_SPINQ(d)::S(G)
- S(i);::S(G)
- Refutation
- R(b);XR(F)
- Try
- S(D);CHECK,XQ(d)
- Vars
- S(i);N_PINS(G),P_SPINS(i)::S(G)
- Refutation
- K(g);N_SPINB(c),S_FLIGHT,XR(F)
- Try
- S(D);CHECK
- Refutation
- K(g);N_SPINB(c),N_SPINQ(d),S_FLIGHT,XR(F)
- Try
- S(D);CHECK,N_PINQ(d),N_SPINS(G)
- Vars
- Q(d);P_PINS(G),P_SPINQ(d)::R1(F),XS(i)
- S(i);P_SPINS(i)::R1(F)
- Refutation
- K(g);N_SPINB(c),S_FLIGHT,XR(F)
- Try
- S(D);CHECK
- Vars
- S(i);N_PINS(G),P_SPINS(i)::S(G)
- Refutation
- K(g);N_SPINB(c),N_SPINQ(d),S_FLIGHT,XR(F)
- Try
- S(D);CHECK
- Vars
- S(i);N_PINS(G),P_SPINS(i)::S(G)
- Refutation
- K(g);N_SPINB(c),N_SPINQ(d),S_FLIGHT,XR(F)
- Try
- S(D);CHECK
- Vars
- S(i);N_PINS(G),P_SPINS(i)::S(G)
- Refutation
- K(g);N_SPINB(c),N_SPINQ(d),S_FLIGHT,XR(F)
- Try
- S(D);CHECK,N_SPINS(G)
- Vars
- S(i);P_SPINS(i)::S(G)
- Refutation
- K(g);N_SPINB(c),N_SPINQ(d),S_FLIGHT,XR(F)
- Try
- B(B);CHECK,XQ(d)
- Refutation
- S(a);XB(B)
- Try
- Actual
- R(E);
- Threat
- R1(E)
- Vars
- Q(d);S_CUTR(b)::R1(F)
- R(b);N_GUARD,P_PINR(E)::R1(F)
- R(b);N_PINS(G),N_SPINQ(d)::S(G)
- S(i);N_PINS(G),N_SPINQ(d)::S(G)
- S(i);N_PINS(G)::S(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).