MESON Chess Problem Database
Problem Display
PID: 249788 (1N5Q/4pB2/2R1P3/3k4/1p2rp2/1P2pK2/4P3/8 w - - 0 1)
Ulanov, Leonid
Schweizerische Schachzeitung, 1996
#2
8 + 6
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.bxc4#
- 1...Rd4
- 2.Qh5#
- 1...Re5
- 2.Qd8#
- 1...Rxe6
- 2.Bxe6#
- 1...Rc4
- Tries
- 1.Bg6?
- threat
- 2.Bxe4#
- 1...Re5
- 2.Qd8#
- 1...Rc4
- 2.bxc4#
- 1...Rd4
- 2.Qh5#
- 1...Rxe6!
- threat
- 1.Bg8?
- 1...Rxe6
- 2.Bxe6#
- 1...Rc4
- 2.bxc4#
- 1...Rd4
- 2.Qh5#
- 1...Re5!
- 1...Rxe6
- 1.Qc3?
- threat
- 2.Qc5#
- 1...Rc4
- 2.bxc4#
- 1...bxc3!
- threat
- 1.Qg7?
- 1...Rxe6
- 2.Bxe6#
- 1...Rc4
- 2.bxc4#
- 1...Rd4
- 2.Qg5#
- 1...Re5!
- 1...Rxe6
- 1.Qh5+?
- 1...Kd4
- 2.Rc4#
- 2.Qc5#
- 1...Re5!
- 1...Kd4
- 1.Bg6?
- Keys
- 1.Qa1!
- 1...Rxe6
- 2.Bxe6#
- 1...Rd4
- 2.Qa5#
- 1...Rc4
- 2.bxc4#
- 1...Re5
- 2.Qd1#
- 1...Rxe6
- 1.Qa1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(c);OGATE::P(B),XR(c)
- R(c);N_GUARD,SBLOCK::QAR(H)
- R(c);SBLOCK::QAR(H)
- R(c);OGATE,P_SPINR(c),XP(E)::B(F),XR(c)
- Tries
- Try
- B(F);
- Threat
- B(F),XR(c)
- Vars
- R(c);SBLOCK::QAR(H)
- R(c);OGATE::P(B),XR(c)
- R(c);N_GUARD,SBLOCK::QAR(H)
- Refutation
- R(c);XP(E)
- Try
- B(F);
- Vars
- R(c);OGATE,P_SPINR(c),XP(E)::B(F),XR(c)
- R(c);OGATE::P(B),XR(c)
- R(c);N_GUARD,SBLOCK::QAR(H)
- Refutation
- R(c);
- Try
- Q(H);
- Threat
- QAR1(H)
- Vars
- R(c);OGATE::P(B),XR(c)
- Refutation
- P(b);XQ(H)
- Try
- Q(H);
- Vars
- R(c);OGATE,P_SPINR(c),XP(E)::B(F),XR(c)
- R(c);OGATE::P(B),XR(c)
- R(c);N_GUARD,SBLOCK::QAR(H)
- Refutation
- R(c);
- Try
- Q(H);CHECK
- Refutation
- R(c);P_SPINR(c)
- Try
- Actual
- Q(H);
- Vars
- R(c);OGATE,P_SPINR(c),XP(E)::B(F),XR(c)
- R(c);SBLOCK::QAR(H)
- R(c);OGATE::P(B),XR(c)
- R(c);N_GUARD,SBLOCK::QAR(H)
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).