MESON Chess Problem Database
Problem Display
PID: 109563 (1r3R2/4pN2/2r3p1/4R3/3p4/3N4/4P2p/Q2BBk1K w - - 0 1)
Vahlakov, Yuri Nikoleyevich
1st Prize, All-Union Ty., 1964
#2
9 + 7
| 6490 | yacpdb | 2009 |
| 56 | The Problemist | 2011 |
| 5454 | Near Snap | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Sd8#
- 1...Rc2
- 2.Sd8#
- 1...Rc3
- 2.Sd8#
- 1...Rc4
- 2.Sd8#
- 1...Rc5
- 2.Sd8#
- 1...Rc7
- 2.Sd8#
- 1...Rcc8
- 2.Sd8#
- 1...Rb1
- 2.Sd6#
- 1...Rb2
- 2.Sd6#
- 1...Rb3
- 2.Sd6#
- 1...Rb4
- 2.Sd6#
- 1...Rb5
- 2.Sd6#
- 1...Rb6
- 2.Sd6#
- 1...Rb7
- 2.Sd6#
- 1...g5
- 2.Rf5#
- 1...e6
- 2.Sd8#
- 1...Rc1
- Tries
- 1.Bc2?
- threat
- 2.Bb4#
- 1...Rxc2
- 2.Sd8#
- 1...Rc3
- 2.Sd8#
- 1...Rb1
- 2.Sd6#
- 1...Rb2
- 2.Sd6#
- 1...Rb3
- 2.Sd6#
- 1...Rb4
- 2.Sd6#
- 2.Bxb4#
- 1...Ra8
- 2.Ba5#
- 1...Ra6!
- threat
- 1.Bb3?
- threat
- 2.Bc3#
- 1...Rxb3
- 2.Sd6#
- 1...Rc1
- 2.Sd8#
- 1...Rc2
- 2.Sd8#
- 1...Rc3
- 2.Sd8#
- 2.Bxc3#
- 1...Ra6
- 2.Ba5#
- 1...Ra8!
- threat
- 1.Ba4?
- 1...Rxf8
- 2.Bc3#
- 1...Rf6
- 2.Bb4#
- 1...Rc1
- 2.Sd8#
- 1...Rc2
- 2.Sd8#
- 1...Rc3
- 2.Sd8#
- 1...Rc4
- 2.Sd8#
- 1...Rc5
- 2.Sd8#
- 1...Ra6
- 2.Bb4#
- 1...Rcb6
- 2.Bb4#
- 1...Rd6
- 2.Bb4#
- 1...Re6
- 2.Bb4#
- 1...Rc7
- 2.Sd8#
- 1...Rcc8
- 2.Sd8#
- 1...Rb1
- 2.Sd6#
- 1...Rb2
- 2.Sd6#
- 1...Rb3
- 2.Sd6#
- 1...Rb4
- 2.Sd6#
- 1...Rb5
- 2.Sd6#
- 1...Rbb6
- 2.Sd6#
- 1...Rb7
- 2.Sd6#
- 1...Ra8
- 2.Bc3#
- 1...Rbc8
- 2.Bc3#
- 1...Rd8
- 2.Bc3#
- 1...Re8
- 2.Bc3#
- 1...e6
- 2.Sd8#
- 1...g5!
- 1...Rxf8
- 1.Bc3?
- threat
- 2.Bb3#
- 1...Rxc3
- 2.Sd8#
- 1...Rb1
- 2.Sd6#
- 1...Rb2
- 2.Sd6#
- 1...Rb3
- 2.Sd6#
- 2.Bxb3#
- 1...Ra8
- 2.Ba4#
- 1...Ra6!
- threat
- 1.Bb4?
- threat
- 2.Bc2#
- 1...Rxb4
- 2.Sd6#
- 1...Ra6
- 2.Ba4#
- 1...Rc1
- 2.Sd8#
- 1...Rc2
- 2.Sd8#
- 2.Bxc2#
- 1...Ra8!
- threat
- 1.Qxd4?
- threat
- 2.Qf2#
- 2.Qf4#
- 1...Rc4
- 2.Sd8#
- 2.Qf2#
- 1...Rb4
- 2.Sd6#
- 2.Qf2#
- 1...g5
- 2.Rf5#
- 2.Qf2#
- 1...Rf6!
- threat
- 1.Qc1?
- threat
- 2.Qf4#
- 1...Rxc1
- 2.Sd8#
- 1...g5
- 2.Rf5#
- 1...Rf6!
- threat
- 1.Bc2?
- Keys
- 1.Ba5!
- 1...Rxf8
- 2.Bc2#
- 1...Ra6
- 2.Bb3#
- 1...Rc1
- 2.Sd8#
- 1...Rc2
- 2.Sd8#
- 1...Rc3
- 2.Sd8#
- 1...Rc4
- 2.Sd8#
- 1...Rc5
- 2.Sd8#
- 1...Rcb6
- 2.Bb3#
- 1...Rd6
- 2.Bb3#
- 1...Re6
- 2.Bb3#
- 1...Rf6
- 2.Bb3#
- 1...Rc7
- 2.Sd8#
- 1...Rcc8
- 2.Sd8#
- 1...Rb1
- 2.Sd6#
- 1...Rb2
- 2.Sd6#
- 1...Rb3
- 2.Sd6#
- 1...Rb4
- 2.Sd6#
- 1...Rb5
- 2.Sd6#
- 1...Rbb6
- 2.Sd6#
- 1...Rb7
- 2.Sd6#
- 1...Ra8
- 2.Bc2#
- 1...Rbc8
- 2.Bc2#
- 1...Rd8
- 2.Bc2#
- 1...Re8
- 2.Bc2#
- 1...g5
- 2.Rf5#
- 1...e6
- 2.Sd8#
- 1...Rxf8
- 1.Ba5!
This anticipates 183968(1980), 68835(1981)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 0
- Sets
- R(d);N_GUARD::R(I)+S(H)
- R(g);N_GUARD::R(I)+S(H)
- P(e);N_GUARD::R(G)
- P(f);S_CUTR(d)::R(I)+S(H)
- Tries
- Try
- B(B);
- Threat
- QAR(A)+B(C)
- Vars
- R(d);N_GUARD,XB(B)::R(I)+S(H)
- R(d);N_GUARD::R(I)+S(H)
- R(g);N_GUARD::R(I)+S(H)
- R(g);N_GUARD::QAR(A)+B(C)
- Refutation
- R(d);
- Try
- B(B);
- Threat
- QAR(A)+B(C)
- Vars
- R(g);N_GUARD,XB(B)::R(I)+S(H)
- R(d);N_GUARD::R(I)+S(H)
- R(d);N_GUARD::QAR(A)+B(C)
- Refutation
- R(g);
- Try
- B(B);
- Vars
- R(g);N_GUARD,XR(I)::QAR(A)+B(C)
- R(d);N_GUARD::QAR(A)+B(C)
- R(d);N_GUARD::R(I)+S(H)
- R(g);N_GUARD::R(I)+S(H)
- R(g);N_GUARD::QAR(A)+B(C)
- P(f);S_CUTR(d)::R(I)+S(H)
- Refutation
- P(e);
- Try
- B(C);
- Threat
- QAR(A)+B(B)
- Vars
- R(d);N_GUARD,XB(C)::R(I)+S(H)
- R(g);N_GUARD::R(I)+S(H)
- R(g);N_GUARD::QAR(A)+B(B)
- Refutation
- R(d);
- Try
- B(C);
- Threat
- QAR(A)+B(B)
- Vars
- R(g);N_GUARD,XB(C)::R(I)+S(H)
- R(d);N_GUARD::QAR(A)+B(B)
- R(d);N_GUARD::R(I)+S(H)
- Refutation
- R(g);
- Try
- Q(A);XP(c)
- Threat
- DUALS(2)
- Refutation
- R(d);
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- R(d);N_GUARD,XQ(A)::R(I)+S(H)
- P(e);N_GUARD::R(G)
- Refutation
- R(d);
- Try
- Actual
- B(C);
- Vars
- R(g);N_GUARD,XR(I)::QAR(A)+B(B)
- R(d);N_GUARD::QAR(A)+B(B)
- R(d);N_GUARD::R(I)+S(H)
- R(g);N_GUARD::R(I)+S(H)
- R(g);N_GUARD::QAR(A)+B(B)
- P(e);N_GUARD::R(G)
- P(f);S_CUTR(d)::R(I)+S(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).