MESON Chess Problem Database
Problem Display
PID: 41994 (5K2/4pQP1/3P3B/4k3/1b1r2p1/2P1rb2/8/1B1RR3 w - - 0 1)
Bonivento, Oscar
L'Italia Scacchistica, 1937
#2
9 + 7
| 4436 | Problemi Opera omnia | 2001 |
SOLUTION
- SOUND
- Sets
- 1...Ree4
- 2.Bf4#
- 1...Rxd1
- 2.Bf4#
- 1...Rd2
- 2.Bf4#
- 1...Rc4
- 2.Qf5#
- 2.Qxe7#
- 1...Rde4
- 2.Rd5#
- 1...Rf4
- 2.Bxf4#
- 1...Rd5
- 2.Bf4#
- 2.Qxe7#
- 1...Rxd6
- 2.Bf4#
- 2.Qf5#
- 1...Be4
- 2.Bf4#
- 1...Bxd6
- 2.Qf5#
- 2.cxd4#
- 1...exd6
- 2.Qf5#
- 2.cxd4#
- 1...Ree4
- Tries
- 1.Kxe7?
- threat
- 2.Qh5#
- 2.Qe6#
- 2.Qf5#
- 2.cxd4#
- 1...Rxd1
- 2.Bf4#
- 2.Qh5#
- 2.Qe6#
- 2.Qf5#
- 1...Rxd6
- 2.Bf4#
- 2.Qh5#
- 2.Qf4#
- 2.Qf5#
- 1...Bxd1
- 2.Qh5#
- 2.Qe6#
- 2.Qf5#
- 1...Bxc3
- 2.Qh5#
- 2.Qe6#
- 2.Qf5#
- 1...Rd3
- 2.Qe6#
- 1...Ree4
- 2.Bf4#
- 2.Qh5#
- 2.Qe6#
- 2.cxd4#
- 1...Rd2
- 2.Bf4#
- 2.Qh5#
- 2.Qe6#
- 2.Qf5#
- 1...Rc4
- 2.Qh5#
- 2.Qe6#
- 2.Qf5#
- 2.Qf6#
- 1...Rde4
- 2.Rd5#
- 2.Qd5#
- 2.Qh5#
- 2.Qe6#
- 2.Qf6#
- 1...Rf4
- 2.Bxf4#
- 2.Qe6#
- 2.Qxf4#
- 1...Rd5
- 2.Bf4#
- 2.Qh5#
- 2.Qe6#
- 2.Qf4#
- 2.Qf5#
- 2.Qf6#
- 1...Be4
- 2.Bf4#
- 2.Qe6#
- 2.cxd4#
- 1...Bd5
- 2.Qh5#
- 2.Qf5#
- 2.Qf6#
- 2.cxd4#
- 1...Bc5
- 2.Qh5#
- 2.Qe6#
- 2.Qf5#
- 1...g3
- 2.Qe6#
- 2.Qf5#
- 2.cxd4#
- 1...Bxd6+!
- threat
- 1.Rxd4?
- threat
- 2.Bf4#
- 2.Qf5#
- 2.Qxe7#
- 1...Bxd6
- 2.Bf4#
- 2.Qf5#
- 1...exd6
- 2.Bf4#
- 2.Qf5#
- 2.Qe7#
- 1...Bd5
- 2.Bf4#
- 2.Rxd5#
- 1...Re4
- 2.Bf4#
- 2.Rd5#
- 1...Be4
- 2.Bf4#
- 1...e6
- 2.Bf4#
- 2.Qf4#
- 1...Bxc3!
- threat
- 1.Rxe3+?
- 1...Re4
- 2.Bf4#
- 2.Rd5#
- 1...Be4
- 2.Bf4#
- 1...Kxd6!
- 1...Re4
- 1.Kxe7?
- Keys
- 1.Be4!
- threat
- 2.Qxe7#
- 1...Kxe4
- 2.Rxe3#
- 2.Qe6#
- 1...Kxd6
- 2.Qxe7#
- 1...Rexe4
- 2.Bf4#
- 1...Rdxe4
- 2.Rd5#
- 1...Rxd6
- 2.Qf5#
- 1...Bxe4
- 2.Bf4#
- 1...Bxd6
- 2.Qf5#
- 1...exd6
- 2.Qf5#
- 2.Qe7#
- 1...e6
- 2.Qf4#
- threat
- 1.Be4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- R(a);S_CUTR(d)::B(F)
- R(d);N_GUARD,XR(B)::B(F)
- R(d);N_GUARD::B(F)
- R(d);N_SPINR(a),OGATE::R1(B)
- R(d);N_GUARD,P_PINQ(G)::B(F),XR(d)
- B(b);N_SPINR(a),S_CUTR(d)::B(F)
- Tries
- Try
- K(I);P_SPINP(E),S_FLIGHT,XP(g)
- Threat
- DUALS(4)
- Vars
- R(d);::QAR1(G)
- Refutation
- B(c);CHECK,XP(E)
- Try
- R(B);XR(d)
- Threat
- DUALS(3)
- Vars
- B(b);N_SPINR(a)::B(F)
- Refutation
- B(c);XP(D)
- Try
- R(C);CHECK,XR(a)
- Vars
- B(b);P_SPINB(b)::B(F)
- Refutation
- K(f);P_SPINR(d),S_FLIGHT,XP(E)
- Try
- Actual
- B(A);N_PINR(a)
- Threat
- QAR2(G),XP(g)
- Vars
- K(f);P_SPINR(d),S_FLIGHT,XP(E)::QAB1(G),XP(g)
- R(a);P_SPINR(a),XB(A)::B(F)
- R(d);OGATE,SBLOCK,XB(A)::R1(B)
- R(d);XP(E)::QAR1(G)
- B(b);SBLOCK,XB(A)::B(F)
- B(c);SBLOCK,XP(E)::QAR1(G)
- P(g);P_PINP(E),SBLOCK::QAB1(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).