MESON Chess Problem Database
Problem Display
PID: 196541 (1KQ5/4R3/4R1B1/1P1P2B1/bp4p1/p5p1/1p6/1NNk3r w - - 0 1)
Ruonala, Lauri Armas
Suomen Shakki, 1957
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Rxe1#
- 1...Rh2
- 2.Re1#
- 1...Rh3
- 2.Re1#
- 1...Rh4
- 2.Re1#
- 1...Rh5
- 2.Re1#
- 1...Rh6
- 2.Re1#
- 1...Rh7
- 2.Re1#
- 1...Rh8
- 2.Re1#
- 1...Bc2
- 2.Bxc2#
- 2.Qxc2#
- 1...Bxb5
- 2.Bc2#
- 2.Qc2#
- 1...bxc1Q
- 2.Qxc1#
- 1...bxc1S
- 2.Qxc1#
- 1...bxc1B
- 2.Qxc1#
- 1...bxc1R
- 2.Qxc1#
- 1...b3
- 2.Sc3#
- 1...Re1
- Tries
- 1.Sb3?
- threat
- 2.Bc2#
- 2.Qc2#
- 1...Rh2
- 2.Re1#
- 1...Rh8
- 2.Bc2#
- 2.Re1#
- 1...Bxb3!
- threat
- 1.Bf5?
- threat
- 2.Bxg4#
- 1...Bxb5
- 2.Bc2#
- 2.Qc2#
- 1...bxc1S
- 2.Qxc1#
- 1...Re1
- 2.Rxe1#
- 1...Rh2
- 2.Re1#
- 1...Rh4
- 2.Re1#
- 1...Rf1!
- threat
- 1.Re3?
- threat
- 2.Rd3#
- 1...Bxb5
- 2.Qc2#
- 1...bxc1Q
- 2.Qxg4#
- 1...bxc1B
- 2.Qxg4#
- 1...Bc2
- 2.Qxc2#
- 1...Rh2
- 2.Re1#
- 1...bxc1S!
- threat
- 1.Re4?
- threat
- 2.Rd4#
- 1...bxc1Q
- 2.Qxc1#
- 1...bxc1S
- 2.Qxc1#
- 1...bxc1B
- 2.Qxc1#
- 1...Rh2
- 2.Re1#
- 1...Bc2
- 2.Qxg4#
- 1...Bxb5!
- threat
- 1.Re5?
- threat
- 2.Qxg4#
- 1...Bxb5
- 2.Bc2#
- 2.Qc2#
- 1...bxc1S
- 2.Qxc1#
- 1...Re1
- 2.Rxe1#
- 1...Rh2
- 2.Re1#
- 1...Rh4
- 2.Re1#
- 1...Rh8
- 2.Re1#
- 1...Rf1!
- threat
- 1.Rf6?
- threat
- 2.Qxg4#
- 1...Bxb5
- 2.Bc2#
- 2.Qc2#
- 1...bxc1S
- 2.Qxc1#
- 1...Rf1
- 2.Rxf1#
- 1...Rh2
- 2.Rf1#
- 1...Rh4
- 2.Rf1#
- 1...Rh8
- 2.Rf1#
- 1...Re1!
- threat
- 1.Qc3?
- threat
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Bxb5
- 2.Bc2#
- 2.Qd2#
- 2.Qc2#
- 2.Qb3#
- 1...bxc1Q
- 2.Qxc1#
- 1...bxc1S
- 2.Qd2#
- 2.Qxc1#
- 1...bxc1B
- 2.Qxc1#
- 1...bxc3
- 2.Sxc3#
- 1...Rh2
- 2.Re1#
- 2.Qe1#
- 1...Bc2
- 2.Bxc2#
- 2.Qd2#
- 2.Qxc2#
- 1...Rh8+!
- threat
- 1.Qc4?
- threat
- 2.Qe2#
- 2.Qd3#
- 2.Qd4#
- 2.Qxg4#
- 1...Bxb5
- 2.Bc2#
- 2.Qb3#
- 2.Qc2#
- 1...bxc1Q
- 2.Qe2#
- 2.Qxc1#
- 2.Qxg4#
- 1...bxc1S
- 2.Qxc1#
- 1...bxc1B
- 2.Qe2#
- 2.Qxc1#
- 2.Qxg4#
- 1...Rf1
- 2.Qxf1#
- 2.Qe2#
- 2.Qd3#
- 2.Qd4#
- 1...Re1
- 2.Rxe1#
- 2.Qd3#
- 2.Qd4#
- 1...Rh2
- 2.Re1#
- 2.Qf1#
- 1...Rh4
- 2.Re1#
- 2.Qf1#
- 2.Qe2#
- 2.Qd3#
- 2.Qd4#
- 1...Bc2
- 2.Bxc2#
- 2.Qe2#
- 2.Qxc2#
- 2.Qxg4#
- 1...Rh8+!
- threat
- 1.Qc5?
- threat
- 2.Qd4#
- 1...Bxb5
- 2.Bc2#
- 2.Qc2#
- 1...bxc1Q
- 2.Qxc1#
- 1...bxc1S
- 2.Qxc1#
- 1...bxc1B
- 2.Qxc1#
- 1...Rh2
- 2.Re1#
- 2.Qg1#
- 1...Bc2
- 2.Bxc2#
- 2.Qxc2#
- 1...Rh8+!
- threat
- 1.Sb3?
- Keys
- 1.Re2!
- threat
- 2.Rd2#
- 1...bxc1Q
- 2.Qxc1#
- 1...bxc1B
- 2.Qxc1#
- 1...Rh2
- 2.Re1#
- 1...Bc2
- 2.Bxc2#
- 2.Qxc2#
- threat
- 1.Re2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 10
- Sets
- R(b);N_GUARD::R1(F),XR(b)
- R(b);N_GUARD::R1(F)
- R(b);N_GUARD,P_PINQ(J)::R1(F)
- P(c);OGATE,XS(B)::QAR1(J),XQ(c)
- P(c);OGATE,XS(B)::QAR1(J),XS(c)
- P(c);OGATE,XS(B)::QAR1(J),XB(c)
- P(c);OGATE,XS(B)::QAR1(J),XR(c)
- P(g);N_GUARD::S(A)
- Tries
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- R(b);N_GUARD::R1(F)
- Refutation
- B(f);XS(B)
- Try
- B(G);
- Threat
- B(G),XP(h)
- Vars
- P(c);OGATE,XS(B)::QAR1(J),XS(c)
- R(b);N_GUARD::R1(F),XR(b)
- R(b);N_GUARD::R1(F)
- Refutation
- R(b);
- Try
- R(F);
- Threat
- R(F)
- Vars
- B(f);N_GUARD,XP(C)::QAB1(J)
- P(c);SBLOCK,XS(B)::QAB(J),XP(h)
- B(f);N_GUARD::QAB1(J),XB(f)
- R(b);N_GUARD::R1(F)
- Refutation
- P(c);XS(B)
- Try
- R(F);
- Threat
- R(F)
- Vars
- P(c);OGATE,XS(B)::QAR1(J),XQ(c)
- P(c);OGATE,XS(B)::QAR1(J),XS(c)
- P(c);OGATE,XS(B)::QAR1(J),XB(c)
- R(b);N_GUARD::R1(F)
- B(f);SBLOCK::QAB(J),XP(h)
- Refutation
- B(f);XP(C)
- Try
- R(F);
- Threat
- QAB(J),XP(h)
- Vars
- P(c);OGATE,XS(B)::QAR1(J),XS(c)
- R(b);N_GUARD::R1(F),XR(b)
- R(b);N_GUARD::R1(F)
- R(b);N_GUARD,P_PINQ(J)::R1(F)
- Refutation
- R(b);
- Try
- R(F);
- Threat
- QAB(J),XP(h)
- Vars
- P(c);OGATE,XS(B)::QAR1(J),XS(c)
- R(b);N_GUARD::R(F),XR(b)
- R(b);N_GUARD::R(F)
- R(b);N_GUARD,P_PINQ(J)::R(F)
- Refutation
- R(b);
- Try
- Q(J);
- Threat
- DUALS(3)
- Vars
- P(c);OGATE,XS(B)::QAR1(J),XQ(c)
- P(c);OGATE,XS(B)::QAR1(J),XB(c)
- P(g);XQ(J)::S(A),XP(g)
- Refutation
- R(b);CHECK
- Try
- Q(J);
- Threat
- DUALS(4)
- Vars
- P(c);OGATE,XS(B)::QAR1(J),XS(c)
- Refutation
- R(b);CHECK
- Try
- Q(J);
- Threat
- QAR(J)
- Vars
- P(c);OGATE,XS(B)::QAR1(J),XQ(c)
- P(c);OGATE,XS(B)::QAR1(J),XS(c)
- P(c);OGATE,XS(B)::QAR1(J),XB(c)
- Refutation
- R(b);CHECK
- Try
- Actual
- R(F);
- Threat
- R1(F)
- Vars
- P(c);OGATE,XS(B)::QAR1(J),XQ(c)
- P(c);OGATE,XS(B)::QAR1(J),XB(c)
- R(b);N_GUARD::R1(F)
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).