MESON Chess Problem Database
Problem Display
PID: 105538 (8/4B2K/6P1/1N4QR/2k1B3/3r2r1/2P2b2/8 w - - 0 1)
Dedeshin, Viktor
Chelyabinsky raboci, 1974
#2
8 + 4
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Qd5#
- 1...Rb3
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rde3
- 2.Qc5#
- 2.Qd5#
- 1...Rdf3
- 2.Qd5#
- 1...Rd4
- 2.Qc5#
- 1...Rd5
- 2.Qxd5#
- 1...Rg1
- 2.Bxd3#
- 1...Rg2
- 2.Bxd3#
- 1...Rge3
- 2.Qc5#
- 1...Rg4
- 2.Bxd3#
- 1...Be1
- 2.Qc5#
- 1...Be3
- 2.Bxd3#
- 1...Bd4
- 2.Qd5#
- 1...Bc5
- 2.Qxc5#
- 1...Ra3
- Tries
- 1.Bd5+?
- 1...Rxd5
- 2.Qxd5#
- 1...Kxb5!
- 1...Rxd5
- 1.Rh4?
- threat
- 2.Bxd3#
- 1...Rd5
- 2.Bd3#
- 2.Qxd5#
- 1...Rd6
- 2.Bd3#
- 1...Rd1
- 2.Bd3#
- 1...Rd2
- 2.Bd3#
- 1...Ra3
- 2.Bd3#
- 2.Qd5#
- 1...Rb3
- 2.Bd3#
- 2.Qd5#
- 1...Rc3
- 2.Bd3#
- 2.Qd5#
- 1...Rde3
- 2.Bd3#
- 2.Qc5#
- 2.Qd5#
- 1...Rdf3
- 2.Bd3#
- 2.Qd5#
- 1...Rd4
- 2.Qc5#
- 1...Rd7
- 2.Bd3#
- 1...Rd8
- 2.Bd3#
- 1...Bd4
- 2.Qd5#
- 1...Rxg5!
- threat
- 1.Qd2?
- threat
- 2.Qb4#
- 1...Bc5
- 2.Rxc5#
- 1...Rb3
- 2.Sd6#
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rd6
- 2.Sxd6#
- 1...Be1
- 2.Rc5#
- 1...Rxd2!
- threat
- 1.Qf4?
- threat
- 2.Bxd3#
- 1...Rd5
- 2.Bd3#
- 1...Rd6
- 2.Bd3#
- 1...Rd1
- 2.Bd3#
- 1...Rd2
- 2.Bd3#
- 1...Ra3
- 2.Bd3#
- 2.Qf7#
- 1...Rb3
- 2.Bd3#
- 2.Qf7#
- 1...Rc3
- 2.Bd3#
- 2.Qf7#
- 1...Rde3
- 2.Bd3#
- 2.Qc7#
- 2.Qf7#
- 1...Rdf3
- 2.Bd3#
- 1...Rd4
- 2.Qc7#
- 1...Rd7
- 2.Bd3#
- 1...Rd8
- 2.Bd3#
- 1...Bd4
- 2.Qf7#
- 1...Rg5!
- threat
- 1.Bd5+?
- Keys
- 1.Qg4!
- threat
- 2.Bxd3#
- 1...Rd5
- 2.Bd3#
- 1...Rd6
- 2.Bd3#
- 1...Rd1
- 2.Bd3#
- 1...Rd2
- 2.Bd3#
- 1...Ra3
- 2.Bd3#
- 2.Qe6#
- 1...Rb3
- 2.Bd3#
- 2.Qe6#
- 1...Rc3
- 2.Bd3#
- 2.Qe6#
- 1...Rde3
- 2.Bd3#
- 2.Qe6#
- 2.Qc8#
- 1...Rdf3
- 2.Bd3#
- 2.Qe6#
- 1...Rd4
- 2.Qc8#
- 1...Rd7
- 2.Bd3#
- 1...Rd8
- 2.Bd3#
- 1...Bd4
- 2.Qe6#
- threat
- 1.Qg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 5
- REMOVED MATES = 11
- Sets
- R(b);N_GUARD::QAB1(D)
- R(b);S_CUTB(a)::QAR1(D)
- R(b);N_GUARD::QAB1(D),XR(b)
- R(c);N_GUARD::B(B),XR(b)
- R(c);S_CUTB(a)::QAR1(D)
- B(a);N_GUARD::QAR1(D)
- B(a);S_CUTR(c)::B(B),XR(b)
- B(a);S_CUTR(b)::QAB1(D)
- B(a);N_GUARD::QAR1(D),XB(a)
- Tries
- Try
- B(B);CHECK
- Vars
- R(b);OGATE,XB(B)::QAB1(D),XR(b)
- Refutation
- K(d);S_FLIGHT,XS(C)
- Try
- R(E);
- Threat
- R(E)+B(B),DCHECK,XR(b)
- Vars
- R(b);::R(E)+B(B),DCHECK
- R(b);S_CUTB(a)::QAR1(D)
- R(b);P_PINB(G)::R(E)+B(B),DCHECK
- B(a);S_CUTR(b)::QAB1(D)
- Refutation
- R(c);XQ(D)
- Try
- Q(D);
- Threat
- QAR1(D)
- Vars
- B(a);N_GUARD::R1(E),XB(a)
- R(b);OGATE::QAB1(D)
- R(b);N_GUARD::S(C),XR(b)
- B(a);N_GUARD::R1(E)
- Refutation
- R(b);XQ(D)
- Try
- Q(D);
- Threat
- QAR(D)+B(B),DCHECK,XR(b)
- Vars
- R(b);::QAR(D)+B(B),DCHECK
- R(b);S_CUTB(a)::QAR(D)
- R(b);P_PINB(G)::QAR(D)+B(B),DCHECK
- B(a);S_CUTR(b)::QAB(D)
- Refutation
- R(c);
- Try
- Actual
- Q(D);
- Threat
- QAR(D)+B(B),DCHECK,XR(b)
- Vars
- R(b);::QAR(D)+B(B),DCHECK
- R(b);S_CUTB(a)::QAR(D)
- R(b);P_PINB(G)::QAR(D)+B(B),DCHECK
- B(a);S_CUTR(b)::QAB(D)
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).