MESON Chess Problem Database
Problem Display
PID: 228913 (5K2/1P3Q2/3N2p1/4kb2/5rp1/n1ppN3/1r5B/4R3 w - - 0 1)
Cristoffanini, Guido
L'Italia Scacchistica, 1926
#2
7 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Kd4
- 2.Qd5#
- 1...Rb3
- 2.Sexf5#
- 1...Rb5
- 2.Sexf5#
- 1...Rb6
- 2.Sexf5#
- 1...Rxb7
- 2.Sexf5#
- 1...Be6
- 2.Qxf4#
- 1...c2
- 2.Sexf5#
- 1...Kd4
- Tries
- 1.Ke7?
- threat
- 2.Qd5#
- 2.Qf6#
- 2.Qg7#
- 1...Kd4
- 2.Qd5#
- 1...Rb5
- 2.Sexf5#
- 2.Qf6#
- 2.Qg7#
- 1...Be4
- 2.Qf6#
- 2.Qg7#
- 1...Be6
- 2.Qxf4#
- 2.Qf6#
- 2.Qg7#
- 1...Rxb7+!
- threat
- 1.Kg7?
- threat
- 2.Qd5#
- 2.Qf6#
- 1...Kd4
- 2.Qd5#
- 1...Rxb7
- 2.Sexf5#
- 1...Rb5
- 2.Sexf5#
- 2.Qf6#
- 1...Be4
- 2.Qf6#
- 1...Be6
- 2.Qxf4#
- 1...Kxd6!
- threat
- 1.Sc2+?
- 1...Be4
- 2.Bxf4#
- 1...Kxd6!
- 1...Be4
- 1.Sdc4+?
- 1...Kd4
- 2.Qd5#
- 1...Ke4
- 2.Qd5#
- 1...Sxc4!
- 1...Kd4
- 1.Sdxf5?
- threat
- 2.Sc2#
- 2.Sc4#
- 2.Sxg4#
- 2.Qe7#
- 1...Ke4
- 2.Qd5#
- 1...Rxh2
- 2.Sc4#
- 2.Sxg4#
- 2.Qe7#
- 1...Rxb7
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg2#
- 2.Sc4#
- 2.Sxg4#
- 2.Sd5#
- 1...Re2
- 2.Qe7#
- 1...Rb1
- 2.Sd1#
- 2.Sc4#
- 2.Sxg4#
- 2.Qe7#
- 1...Rc2
- 2.Sxc2#
- 2.Sc4#
- 2.Sxg4#
- 2.Qe7#
- 1...Rd2
- 2.Sc4#
- 2.Sxg4#
- 2.Qe7#
- 1...Rf2
- 2.Sc4#
- 2.Sxg4#
- 2.Qe7#
- 1...Rg2
- 2.Sxg2#
- 2.Sc4#
- 2.Sxg4#
- 2.Qe7#
- 1...Rb4
- 2.Sc4#
- 2.Sxg4#
- 2.Qe7#
- 1...Rb6
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg2#
- 2.Sc4#
- 2.Sxg4#
- 2.Sd5#
- 1...Sc2
- 2.Sxc2#
- 2.Sc4#
- 2.Sxg4#
- 2.Qe7#
- 1...Sc4
- 2.Sxc4#
- 2.Sxg4#
- 2.Qe7#
- 1...c2
- 2.Sd1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 2.Sxg4#
- 2.Sd5#
- 2.Qe7#
- 1...d2
- 2.Sc4#
- 2.Sxg4#
- 2.Qe7#
- 1...g3
- 2.Sc4#
- 2.Sg4#
- 2.Qe7#
- 1...gxf5!
- threat
- 1.Bxf4+?
- 1...Kd4
- 2.Qd5#
- 1...Kxf4!
- 1...Kd4
- 1.Qg7+?
- 1...Ke6
- 2.Qe7#
- 1...Kxd6!
- 1...Ke6
- 1.Ke7?
- Keys
- 1.Se8!
- threat
- 2.Qd5#
- 1...Kd4
- 2.Qd5#
- 1...Ke4
- 2.Qd5#
- 1...Rb5
- 2.Sxf5#
- 1...Be4
- 2.Qf6#
- 1...Be6
- 2.Qxf4#
- 1...Bd7
- 2.Sc2#
- 1...Bc8
- 2.Sc2#
- threat
- 1.Se8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- K(g);N_SPINR(e),S_FLIGHT::QAR1(F)
- R(a);N_GUARD::R(A)+S(C),XB(h)
- R(a);N_GUARD,XP(E)::R(A)+S(C),XB(h)
- B(h);OGATE,P_PINQ(F),SBLOCK::QAB1(F),XR(e)
- P(c);S_CUTR(a)::R(A)+S(C),XB(h)
- Tries
- Try
- K(G);S_FLIGHT
- Threat
- DUALS(3)
- Vars
- K(g);N_SPINR(e),S_FLIGHT::QAR1(F)
- Refutation
- R(a);CHECK,XP(E)
- Try
- K(G);S_FLIGHT
- Threat
- DUALS(2)
- Vars
- K(g);N_SPINR(e),S_FLIGHT::QAR1(F)
- R(a);N_GUARD,P_PINQ(F),XP(E)::R(A)+S(C),XB(h)
- B(h);::QAB1(F)
- B(h);OGATE,SBLOCK::QAB1(F),XR(e)
- Refutation
- K(g);S_FLIGHT,XS(D)
- Try
- S(C);CHECK
- Vars
- B(h);P_PINQ(F),P_SPINB(h)::B(B),XR(e)
- Refutation
- K(g);S_FLIGHT,XS(D)
- Try
- S(D);CHECK
- Vars
- K(g);N_SPINR(e),S_FLIGHT::QAR1(F)
- K(g);N_SPINR(e),P-FLIGHT::QAB1(F)
- Refutation
- S(b);XS(D)
- Try
- S(D);XB(h)
- Threat
- DUALS(4)
- Vars
- K(g);N_SPINR(e),P-FLIGHT::QAB1(F)
- R(a);::QAR2(F)
- Refutation
- P(i);XS(D)
- Try
- B(B);CHECK,XR(e)
- Vars
- K(g);S_FLIGHT::QAR1(F)
- Refutation
- K(g);P_SPINB(h),S_FLIGHT,XB(B)
- Try
- Q(F);CHECK
- Vars
- K(g);N_SPINR(e),P-FLIGHT::QAR1(F)
- Refutation
- K(g);S_FLIGHT,XS(D)
- Try
- Actual
- S(D);
- Threat
- QAR1(F)
- Vars
- K(g);N_SPINR(e),S_FLIGHT::QAR1(F)
- K(g);N_SPINR(e),P-FLIGHT::QAB1(F)
- R(a);N_GUARD::R(A)+S(C),XB(h)
- B(h);P_PINQ(F),SBLOCK::QAB1(F)
- B(h);OGATE,P_PINQ(F),SBLOCK::QAB1(F),XR(e)
- B(h);N_GUARD,P_PINQ(F)::R(A)+S(C)
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).