MESON Chess Problem Database
Problem Display
PID: 178066 (B2RrN2/2pbp3/1p5Q/1Pk1nPp1/Ppn5/1P2N3/2RpKB2/3rb3 w - - 0 1)
Chernichev, D
Bulletin Ouvrier des Echecs, 1952
#2
12 + 13
SOLUTION
- SOUND
- Sets
- 1...Kd4
- 2.Se6#
- 1...Bxb5
- 2.Se6#
- 2.Rd5#
- 1...Bxf5
- 2.Rd5#
- 1...Bc6
- 2.Se6#
- 1...Be6
- 2.Sxe6#
- 1...Bc8
- 2.Rd5#
- 1...Sd3
- 2.Rxc4#
- 1...Sf3
- 2.Rxc4#
- 1...Sg4
- 2.Rxc4#
- 1...Sc6
- 2.Rxc4#
- 1...Sf7
- 2.Rxc4#
- 1...Kd4
- Tries
- 1.Sxd7+?
- 1...Sxd7
- 2.Rxc4#
- 1...Kd4!
- 1...Sxd7
- 1.Rxd7?
- threat
- 2.Se6#
- 2.Rd5#
- 1...Rxf8
- 2.Rd5#
- 1...Sxd7
- 2.Rxc4#
- 1...Rd8
- 2.Se6#
- 1...c6
- 2.Se6#
- 1...e6!
- threat
- 1.Qxb6+?
- 1...Kxb6
- 2.Sxc4#
- 1...cxb6!
- 1...Kxb6
- 1.Qc6+?
- 1...Kd4
- 2.Se6#
- 2.Qd5#
- 1...Bxc6
- 2.Se6#
- 1...Sxc6!
- 1...Kd4
- 1.Qe6?
- threat
- 2.Qd5#
- 2.Qxe5#
- 1...Kd4
- 2.Qd5#
- 1...Bxe6
- 2.Sxe6#
- 1...Sd3
- 2.Rxc4#
- 2.Qd5#
- 1...Sf3
- 2.Rxc4#
- 2.Qd5#
- 1...Sg4
- 2.Rxc4#
- 2.Qd5#
- 1...Sc6
- 2.Rxc4#
- 2.Qd5#
- 1...Sg6
- 2.Rxc4#
- 2.Qd5#
- 1...Sf7
- 2.Rxc4#
- 2.Qd5#
- 1...c6
- 2.Qxe5#
- 1...Bc6!
- threat
- 1.Qf6?
- threat
- 2.Qxe5#
- 1...Kd4
- 2.Se6#
- 2.Rxc4#
- 1...Bc6
- 2.Se6#
- 1...Be6
- 2.Sxe6#
- 1...Sd3
- 2.Sxd7#
- 2.Rxc4#
- 1...Sf3
- 2.Sxd7#
- 2.Rxc4#
- 1...Sg4
- 2.Sxd7#
- 2.Rxc4#
- 1...Sc6
- 2.Sxd7#
- 2.Rxc4#
- 1...Sg6
- 2.Sxd7#
- 2.Rxc4#
- 1...Sf7
- 2.Sxd7#
- 2.Rxc4#
- 1...exf6!
- threat
- 1.Sxd7+?
- Keys
- 1.Qh2!
- threat
- 2.Qxe5#
- 1...Kd4
- 2.Se6#
- 1...Kd6
- 2.Sxc4#
- 1...Bc6
- 2.Se6#
- 1...Be6
- 2.Sxe6#
- 1...Sd3
- 2.Rxc4#
- 1...Sf3
- 2.Rxc4#
- 1...Sg4
- 2.Rxc4#
- 1...Sc6
- 2.Rxc4#
- 1...Sg6
- 2.Rxc4#
- 1...Sf7
- 2.Rxc4#
- threat
- 1.Qh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- K(f);N_SPINS(e),P_SPINB(k),S_FLIGHT::S(L)
- B(k);OGATE,XP(H)::R1(K)
- B(k);N_GUARD::S(L)
- B(k);N_GUARD::S(L),XB(k)
- B(k);OGATE::R1(K)
- S(g);N_GUARD::R1(A),XS(e)
- Tries
- Try
- S(L);CHECK,XB(k)
- Vars
- S(g);XS(L)::R1(A),XS(e)
- Refutation
- K(f);N_SPINS(e),S_FLIGHT
- Try
- R(K);XB(k)
- Threat
- DUALS(2)
- Vars
- R(m);XS(L)::R1(K)
- S(g);N_GUARD,XR(K)::R1(A),XS(e)
- R(m);::S(L)
- P(j);::S(L)
- Refutation
- P(l);
- Try
- Q(I);CHECK,XP(i)
- Vars
- K(f);N_SPINS(e),S_FLIGHT,XQ(I)::B(C)+S(E),DCHECK,XS(e)
- Refutation
- P(j);XQ(I)
- Try
- Q(I);CHECK
- Vars
- B(k);XQ(I)::S(L)
- Refutation
- S(g);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- K(f);N_SPINS(e),P_SPINB(k),S_FLIGHT::QAR1(I)
- B(k);XQ(I)::S(L),XB(k)
- P(j);::QAR2(I),XS(g)
- Refutation
- B(k);
- Try
- Q(I);
- Threat
- QAR2(I),XS(g)
- Vars
- B(k);N_GUARD::S(L)
- B(k);N_GUARD::S(L),XB(k)
- Refutation
- P(l);XQ(I)
- Try
- Actual
- Q(I);
- Threat
- QAR2(I),XS(g)
- Vars
- K(f);N_SPINS(e),P_SPINB(k),S_FLIGHT::S(L)
- K(f);N_SPINS(e),P_SPINB(k),P_SPINS(g),S_FLIGHT::S(E),XS(e)
- B(k);N_GUARD::S(L)
- B(k);N_GUARD::S(L),XB(k)
- S(g);N_GUARD::R1(A),XS(e)
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).