MESON Chess Problem Database
Problem Display
PID: 207309 (4R3/8/rp2N3/6pr/p1pRB2p/P1P1k1pN/2P2nK1/6B1 w - - 0 1)
Rudenko, Valentin Fedorovich
Il Problema, 1962
#2
10 + 10
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Tries
- 1.Sef4?
- threat
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...gxf4
- 2.Bf5#
- 1...Rh6
- 2.Bg6#
- 1...Rh7
- 2.Bxh7#
- 1...Ra5
- 2.Bd5#
- 1...Ra7
- 2.Bb7#
- 1...Ra8
- 2.Bxa8#
- 1...g4
- 2.Bf5#
- 1...b5
- 2.Bc6#
- 1...Rh8!
- threat
- 1.Sc5?
- threat
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Ke2
- 2.Bf3#
- 1...bxc5
- 2.Bc6#
- 1...Rh6
- 2.Bg6#
- 1...Rh7
- 2.Bxh7#
- 1...Ra7
- 2.Bb7#
- 1...Ra8
- 2.Bxa8#
- 1...g4
- 2.Bf5#
- 1...b5
- 2.Bc6#
- 1...Rh8!
- threat
- 1.Sexg5?
- threat
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Ke2
- 2.Bf3#
- 1...Rxg5
- 2.Bf5#
- 1...Rh6
- 2.Bg6#
- 1...Rh7
- 2.Bxh7#
- 1...Ra5
- 2.Bd5#
- 1...Ra7
- 2.Bb7#
- 1...Ra8
- 2.Bxa8#
- 1...b5
- 2.Bc6#
- 1...Rh8!
- threat
- 1.Sc7?
- threat
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Ke2
- 2.Bf3#
- 1...Rh6
- 2.Bg6#
- 1...Rh7
- 2.Bxh7#
- 1...Ra5
- 2.Bd5#
- 1...Ra8
- 2.Bxa8#
- 1...g4
- 2.Bf5#
- 1...b5
- 2.Bc6#
- 1...Rh8!
- threat
- 1.Sg7?
- threat
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Ke2
- 2.Bf3#
- 1...Rh6
- 2.Bg6#
- 1...Rh7
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bxh7#
- 2.Ba8#
- 1...Ra5
- 2.Bd5#
- 1...Ra7
- 2.Bb7#
- 1...Ra8
- 2.Bxa8#
- 1...g4
- 2.Bf5#
- 1...b5
- 2.Bc6#
- 1...Rh8!
- threat
- 1.Sd8?
- threat
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Ke2
- 2.Bf3#
- 1...Rh6
- 2.Bg6#
- 1...Rh7
- 2.Bxh7#
- 1...Ra5
- 2.Bd5#
- 1...Ra7
- 2.Bb7#
- 1...Ra8
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Bxa8#
- 1...g4
- 2.Bf5#
- 1...b5
- 2.Bc6#
- 1...Rh8!
- threat
- 1.Bxf2+?
- 1...Ke2
- 2.Sg1#
- 2.Bf3#
- 1...gxf2!
- 1...Ke2
- 1.Bc6?
- threat
- 2.Sef4#
- 2.Sc5#
- 2.Sexg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Ke2
- 2.Sef4#
- 1...Rh8
- 2.Sf8#
- 1...Rh7
- 2.Sg7#
- 1...Ra5
- 2.Sc5#
- 1...Ra7
- 2.Sc7#
- 1...Ra8
- 2.Sd8#
- 1...g4
- 2.Seg5#
- 1...Rh6!
- threat
- 1.Bg6?
- threat
- 2.Sef4#
- 2.Sc5#
- 2.Sexg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Ke2
- 2.Sef4#
- 1...Rh8
- 2.Sf8#
- 1...Rh7
- 2.Sg7#
- 1...Ra5
- 2.Sc5#
- 1...Ra7
- 2.Sc7#
- 1...Ra8
- 2.Sd8#
- 1...g4
- 2.Seg5#
- 1...b5!
- threat
- 1.Sef4?
- Keys
- 1.Sf8!
- threat
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bc6#
- 2.Bg6#
- 2.Bb7#
- 2.Bh7#
- 2.Ba8#
- 1...Ke2
- 2.Bf3#
- 1...Rh6
- 2.Bg6#
- 1...Rh7
- 2.Bxh7#
- 1...Ra5
- 2.Bd5#
- 1...Ra7
- 2.Bb7#
- 1...Ra8
- 2.Bxa8#
- 1...g4
- 2.Bf5#
- 1...b5
- 2.Bc6#
- threat
- 1.Sf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(I);
- Threat
- DUALS(8)
- Vars
- P(g);XS(I)::R(J)+B(H)
- R(h);::R(J)+B(H)
- R(h);::R(J)+B(H),XR(h)
- R(i);::R(J)+B(H)
- R(i);::R(J)+B(H),XR(i)
- P(g);::R(J)+B(H)
- P(j);::R(J)+B(H)
- Refutation
- R(h);
- Try
- S(I);
- Threat
- DUALS(8)
- Vars
- K(b);N_SPINS(a),P-FLIGHT::R(J)+B(H),DCHECK
- P(j);XS(I)::R(J)+B(H)
- R(h);::R(J)+B(H)
- R(h);::R(J)+B(H),XR(h)
- R(i);::R(J)+B(H)
- R(i);::R(J)+B(H),XR(i)
- P(g);::R(J)+B(H)
- P(j);::R(J)+B(H)
- Refutation
- R(h);
- Try
- S(I);XP(g)
- Threat
- DUALS(8)
- Vars
- K(b);N_SPINS(a),P-FLIGHT::R(J)+B(H),DCHECK
- R(h);XS(I)::R(J)+B(H)
- R(h);::R(J)+B(H)
- R(h);::R(J)+B(H),XR(h)
- R(i);::R(J)+B(H)
- R(i);::R(J)+B(H),XR(i)
- P(j);::R(J)+B(H)
- Refutation
- R(h);
- Try
- S(I);
- Threat
- DUALS(8)
- Vars
- K(b);N_SPINS(a),P-FLIGHT::R(J)+B(H),DCHECK
- R(h);::R(J)+B(H)
- R(h);::R(J)+B(H),XR(h)
- R(i);::R(J)+B(H)
- R(i);::R(J)+B(H),XR(i)
- P(g);::R(J)+B(H)
- P(j);::R(J)+B(H)
- Refutation
- R(h);
- Try
- S(I);
- Threat
- DUALS(8)
- Vars
- K(b);N_SPINS(a),P-FLIGHT::R(J)+B(H),DCHECK
- R(h);::R(J)+B(H)
- R(i);::R(J)+B(H)
- R(i);::R(J)+B(H),XR(i)
- P(g);::R(J)+B(H)
- P(j);::R(J)+B(H)
- Refutation
- R(h);
- Try
- S(I);
- Threat
- DUALS(8)
- Vars
- K(b);N_SPINS(a),P-FLIGHT::R(J)+B(H),DCHECK
- R(h);::R(J)+B(H)
- R(h);::R(J)+B(H),XR(h)
- R(i);::R(J)+B(H)
- P(g);::R(J)+B(H)
- P(j);::R(J)+B(H)
- Refutation
- R(h);
- Try
- B(A);CHECK,XS(a)
- Refutation
- P(c);XB(A)
- Try
- B(H);
- Threat
- DUALS(7)
- Vars
- K(b);N_SPINS(a),P-FLIGHT::R(J)+S(I),DCHECK
- R(h);::R(J)+S(I)
- R(i);::R(J)+S(I)
- P(g);::R(J)+S(I)
- Refutation
- R(h);
- Try
- B(H);
- Threat
- DUALS(7)
- Vars
- K(b);N_SPINS(a),P-FLIGHT::R(J)+S(I),DCHECK
- R(h);::R(J)+S(I)
- R(i);::R(J)+S(I)
- P(g);::R(J)+S(I)
- Refutation
- P(j);
- Try
- Actual
- S(I);
- Threat
- DUALS(8)
- Vars
- K(b);N_SPINS(a),P-FLIGHT::R(J)+B(H),DCHECK
- R(h);::R(J)+B(H)
- R(h);::R(J)+B(H),XR(h)
- R(i);::R(J)+B(H)
- R(i);::R(J)+B(H),XR(i)
- P(g);::R(J)+B(H)
- P(j);::R(J)+B(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).