MESON Chess Problem Database
Problem Display
PID: 135220 (8/1Kp5/p1PpPNp1/Rn3bR1/2Bkp1Q1/3P4/3B1P2/8 w - - 0 1)
Rudenko, Valentin Fedorovich
The Problemist, 1959
#2
11 + 8
| 56 | The Problemist | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ke5
- 2.Bc3#
- 1...Bxg4
- 2.Rd5#
- 1...Bxe6
- 2.Qxe4#
- 1...Sa3
- 2.Rd5#
- 1...Sc3
- 2.Be3#
- 1...Sa7
- 2.Rd5#
- 1...Ke5
- Tries
- 1.Sxe4?
- 1...Ke5
- 2.Bc3#
- 1...Bxe4
- 2.Rd5#
- 2.Qxe4#
- 1...Bxg4
- 2.Be3#
- 2.Rd5#
- 1...Bxe6
- 2.Be3#
- 1...Sa3
- 2.Bc3#
- 2.Be3#
- 2.Rd5#
- 1...Sc3
- 2.Bxc3#
- 2.Be3#
- 1...Sa7
- 2.Bc3#
- 2.Be3#
- 2.Rd5#
- 1...d5!
- 1...Ke5
- 1.Sd7?
- 1...Bxg4
- 2.Rd5#
- 1...Bxe6
- 2.Qxe4#
- 1...Sa3
- 2.Rd5#
- 1...Sc3
- 2.Be3#
- 1...Sa7
- 2.Rd5#
- 1...d5!
- 1...Bxg4
- 1.Be3+?
- 1...Ke5
- 2.Sd7#
- 1...Kc3!
- 1...Ke5
- 1.Rxb5?
- threat
- 2.Rd5#
- 1...Bxe6
- 2.Qxe4#
- 1...d5
- 2.Rxd5#
- 1...axb5!
- threat
- 1.Rxf5?
- threat
- 2.Rd5#
- 2.Qxe4#
- 1...d5
- 2.Rxd5#
- 1...Sc3
- 2.Be3#
- 1...gxf5!
- threat
- 1.Qxf5?
- threat
- 2.Qxe4#
- 2.Qd5#
- 1...exd3
- 2.Rg4#
- 2.Qxd3#
- 2.Qe4#
- 2.Qg4#
- 2.Qf4#
- 2.Qd5#
- 1...d5
- 2.Qxd5#
- 1...Sc3
- 2.Be3#
- 1...e3
- 2.Rg4#
- 2.Qe4#
- 2.Qg4#
- 2.Qf4#
- 2.Qd5#
- 2.fxe3#
- 1...gxf5!
- threat
- 1.Qxe4+?
- 1...Kc5
- 2.Sd7#
- 2.Qd5#
- 2.Qe3#
- 1...Bxe4!
- 1...Kc5
- 1.Qf4?
- 1...Kc5
- 2.Qe3#
- 1...Bxe6
- 2.Qe3#
- 2.Qxe4#
- 1...Bh3
- 2.Rd5#
- 2.Qe3#
- 2.Qxe4#
- 1...Bg4
- 2.Rd5#
- 2.Qe3#
- 2.Qxe4#
- 1...Sa3
- 2.Rd5#
- 2.Qe3#
- 1...Sc3
- 2.Be3#
- 2.Qe3#
- 1...Sa7
- 2.Rd5#
- 2.Qe3#
- 1...d5!
- 1...Kc5
- 1.Sxe4?
- Keys
- 1.Sd5!
- 1...Kc5
- 2.Be3#
- 1...Ke5
- 2.Qxe4#
- 1...Bxg4
- 2.Be3#
- 1...Bxe6
- 2.Be3#
- 1...Sa3
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sa7
- 2.Bc3#
- 1...Kc5
- 1.Sd5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(a);N_SPINP(b),P_SPINB(d),P_SPINS(c),S_FLIGHT::B(A)
- B(d);N_SPINP(b),OGATE,XQ(E)::R1(G)
- B(d);N_GUARD,XP(I)::QAR1(E),XP(b)
- S(c);OGATE::R1(F)
- S(c);SBLOCK::B(A)
- Tries
- Try
- S(J);XP(b)
- Vars
- K(a);P_SPINB(d),P_SPINS(c),S_FLIGHT::B(A)
- B(d);XP(I)::B(A)
- Refutation
- P(f);
- Try
- S(J);
- Vars
- B(d);N_SPINP(b),OGATE,XQ(E)::R1(G)
- B(d);N_GUARD,XP(I)::QAR1(E),XP(b)
- S(c);OGATE::R1(F)
- S(c);SBLOCK::B(A)
- Refutation
- P(f);
- Try
- B(A);CHECK
- Vars
- K(a);N_SPINP(b),P_SPINB(d),P_SPINS(c),S_FLIGHT::S(J)
- Refutation
- K(a);N_SPINP(b),S_FLIGHT
- Try
- R(F);XS(c)
- Threat
- R1(F)
- Vars
- B(d);N_GUARD,XP(I)::QAR1(E),XP(b)
- P(f);::R1(F),XP(f)
- Refutation
- P(e);XR(F)
- Try
- R(G);XB(d)
- Threat
- DUALS(2)
- Vars
- P(f);::R1(G),XP(f)
- S(c);SBLOCK::B(A)
- Refutation
- P(g);XR(G)
- Try
- Q(E);N_PINP(b),XB(d)
- Threat
- DUALS(2)
- Vars
- P(f);::QAR1(E),XP(f)
- S(c);SBLOCK::B(A)
- Refutation
- P(g);XQ(E)
- Try
- Q(E);CHECK,XP(b)
- Refutation
- B(d);P_PINP(H),XQ(E)
- Try
- Q(E);
- Vars
- K(a);N_SPINP(b),P_SPINB(d),P_SPINS(c),S_FLIGHT::QAB(E)
- Refutation
- P(f);
- Try
- Actual
- S(J);
- Vars
- K(a);N_SPINP(b),P_SPINS(c),S_FLIGHT::B(A)
- K(a);N_SPINP(b),P_SPINB(d),S_FLIGHT::QAR1(E),XP(b)
- B(d);N_SPINP(b),XQ(E)::B(A)
- B(d);XP(I)::B(A)
- S(c);N_GUARD::B(A)
- S(c);N_GUARD::B(A),XS(c)
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).