MESON Chess Problem Database
Problem Display
PID: 71105 (8/rBp1Q1K1/4R1P1/3bnp2/4Pk1B/4nN1P/4R1Pb/4N1q1 w - - 0 1)
Virtanen, Kauko
1/2 Prize, Banska Bystrica (BABY), 1959
#2
12 + 9
| 422 | Suomen Tehtavaniekat | 1992 |
SOLUTION
- SOUND
- Sets
- 1...Kxe4
- 2.Qb4#
- 1...Ba2
- 2.Qg5#
- 1...Bb3
- 2.Qg5#
- 1...Bc4
- 2.Qg5#
- 1...Bxe4
- 2.Qg5#
- 1...Bxe6
- 2.Qg5#
- 1...Sd1
- 2.Qg5#
- 1...Sf1
- 2.Qg5#
- 1...Sc2
- 2.Qg5#
- 1...Sxg2
- 2.Qg5#
- 1...S3c4
- 2.Qg5#
- 1...S3g4
- 2.Qg5#
- 1...Sd3
- 2.Sxd3#
- 2.Qg5#
- 1...Sxf3
- 2.Sd3#
- 1...S5c4
- 2.Sd3#
- 2.Qg5#
- 1...S5g4
- 2.Sd3#
- 2.Qg5#
- 1...Sc6
- 2.Sd3#
- 2.Qg5#
- 1...Sxg6
- 2.Sd3#
- 2.Qg5#
- 1...Sd7
- 2.Sd3#
- 2.Qg5#
- 1...Sf7
- 2.Sd3#
- 1...fxe4
- 2.Qg5#
- 1...Kxe4
- Tries
- 1.Sd3+?
- 1...Sxd3
- 2.Qg5#
- 1...Kxe4!
- 1...Sxd3
- 1.Sd2?
- threat
- 2.Qg5#
- 1...Sf3
- 2.Sd3#
- 1...Sf7
- 2.Sd3#
- 1...Qxg2!
- threat
- 1.Sxe5?
- threat
- 2.S5d3#
- 1...Kxe4
- 2.Qb4#
- 1...Bxe4
- 2.Qg5#
- 1...fxe4
- 2.Qg5#
- 1...Bc4
- 2.Qg5#
- 1...Ra3!
- threat
- 1.Bg3+?
- 1...Kxg3
- 2.Qh4#
- 1...Kxe4
- 2.Rxe5#
- 2.Qb4#
- 1...Bxg3!
- 1...Kxg3
- 1.Bg5+?
- 1...Kxe4
- 2.Qb4#
- 1...Kg3!
- 1...Kxe4
- 1.Rxe5?
- threat
- 2.Sd3#
- 2.Qg5#
- 1...Qxe1
- 2.Qg5#
- 1...Bxe4
- 2.Qg5#
- 1...Sxg2
- 2.Rxf5#
- 2.Qg5#
- 1...fxe4
- 2.Qg5#
- 1...Ra3
- 2.Qg5#
- 1...Bc4
- 2.Qg5#
- 1...Qxg2!
- threat
- 1.Ra6?
- threat
- 2.Qxe5#
- 1...Sxf3
- 2.Sd3#
- 1...Sxg6
- 2.Sd3#
- 1...Be6
- 2.Qg5#
- 1...S3c4
- 2.Qg5#
- 1...S3g4
- 2.Qg5#
- 1...Sd3
- 2.Sxd3#
- 1...S5c4
- 2.Sd3#
- 1...S5g4
- 2.Sd3#
- 1...Sc6
- 2.Sd3#
- 1...Sd7
- 2.Sd3#
- 1...Sf7
- 2.Sd3#
- 1...Kxe4!
- threat
- 1.Rc6?
- threat
- 2.Qxe5#
- 1...Kxe4
- 2.Rc4#
- 1...Sxf3
- 2.Sd3#
- 1...Sxc6
- 2.Sd3#
- 1...Sxg6
- 2.Sd3#
- 1...S3c4
- 2.Qg5#
- 1...S3g4
- 2.Qg5#
- 1...Sd3
- 2.Sxd3#
- 1...S5c4
- 2.Sd3#
- 1...S5g4
- 2.Sd3#
- 1...Sd7
- 2.Sd3#
- 1...Sf7
- 2.Sd3#
- 1...Be6!
- threat
- 1.Qd6?
- threat
- 2.Qxe5#
- 1...Kxe4
- 2.Qb4#
- 1...Sc4
- 2.Sd3#
- 1...Sg4
- 2.Sd3#
- 1...cxd6!
- threat
- 1.Qf6?
- threat
- 2.Qxe5#
- 1...Sxf3
- 2.Sd3#
- 1...Sxg6
- 2.Sd3#
- 2.Qg5#
- 1...S3c4
- 2.Qg5#
- 2.Qxf5#
- 1...S3g4
- 2.Qg5#
- 2.Qxf5#
- 1...Sd3
- 2.Sxd3#
- 2.Qg5#
- 1...S5c4
- 2.Sd3#
- 2.Qg5#
- 1...S5g4
- 2.Sd3#
- 2.Qg5#
- 1...Sc6
- 2.Sd3#
- 2.Qg5#
- 1...Sd7
- 2.Sd3#
- 2.Qg5#
- 1...Sf7
- 2.Sd3#
- 1...Kxe4!
- threat
- 1.Qxc7?
- threat
- 2.Qxe5#
- 1...Kxe4
- 2.Qc4#
- 1...Sc4
- 2.Sd3#
- 1...Sg4
- 2.Sd3#
- 1...Rxb7!
- threat
- 1.Sd3+?
- Keys
- 1.Rb6!
- threat
- 2.Qxe5#
- 1...Kxe4
- 2.Rb4#
- 1...Sxf3
- 2.Sd3#
- 1...Sxg6
- 2.Sd3#
- 1...Be6
- 2.Qg5#
- 1...S3c4
- 2.Qg5#
- 1...S3g4
- 2.Qg5#
- 1...Sd3
- 2.Sxd3#
- 1...S5c4
- 2.Sd3#
- 1...S5g4
- 2.Sd3#
- 1...Sc6
- 2.Sd3#
- 1...Sd7
- 2.Sd3#
- 1...Sf7
- 2.Sd3#
- threat
- 1.Rb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 9
- Sets
- K(d);OGATEB,P-FLIGHT,P_SPINB(e),P_SPINS(c),XP(F)::QAR(K)
- B(e);::QAB1(K)
- B(e);XP(F)::QAB1(K)
- B(e);XR(H)::QAB1(K)
- S(c);::QAB1(K)
- S(c);XP(C)::QAB1(K)
- S(f);N_GUARD,XS(D)::S(A)
- S(f);N_GUARD::S(A)
- P(g);SBLOCK,XP(F)::QAB1(K)
- Tries
- Try
- S(A);CHECK
- Vars
- S(f);XS(A)::QAB1(K)
- Refutation
- K(d);P-FLIGHT,P_SPINB(e),P_SPINS(c),XP(F)
- Try
- S(D);
- Threat
- QAB1(K)
- Vars
- S(f);N_GUARD::S(A)
- Refutation
- Q(a);P_PINP(I),XP(C)
- Try
- S(D);XS(f)
- Threat
- S(D)
- Vars
- K(d);OGATEB,P-FLIGHT,P_SPINB(e),P_SPINS(c),XP(F)::QAR(K)
- B(e);XP(F)::QAB1(K)
- P(g);SBLOCK,XP(F)::QAB1(K)
- B(e);::QAB1(K)
- Refutation
- R(h);
- Try
- B(G);CHECK
- Vars
- K(d);S_FLIGHT,XB(G)::QAB1(K)
- Refutation
- B(b);XB(G)
- Try
- B(G);CHECK
- Vars
- K(d);P-FLIGHT,P_SPINB(e),P_SPINS(c),XP(F)::QAR(K)
- Refutation
- K(d);S_FLIGHT
- Try
- R(H);XS(f)
- Threat
- DUALS(2)
- Vars
- Q(a);XS(A)::QAB1(K)
- B(e);XP(F)::QAB1(K)
- P(g);XP(F)::QAB1(K)
- R(h);::QAB1(K)
- B(e);::QAB1(K)
- Refutation
- Q(a);P_PINP(I),XP(C)
- Try
- R(H);
- Threat
- QAB1(K),XS(f)
- Vars
- S(f);N_GUARD,XS(D)::S(A)
- S(f);N_GUARD,XP(I)::S(A)
- B(e);::QAB1(K)
- S(c);::QAB1(K)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- Refutation
- K(d);P-FLIGHT,P_SPINB(e),P_SPINS(c),XP(F)
- Try
- R(H);
- Threat
- QAB1(K),XS(f)
- Vars
- K(d);OGATEB,P-FLIGHT,P_SPINS(c),XP(F)::R(H)
- S(f);N_GUARD,XS(D)::S(A)
- S(f);N_GUARD,XR(H)::S(A)
- S(f);N_GUARD,XP(I)::S(A)
- S(c);::QAB1(K)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- Refutation
- B(e);
- Try
- Q(K);P_PINS(f)
- Threat
- QAB1(K),XS(f)
- Vars
- K(d);N_SPINS(f),OGATEB,P-FLIGHT,P_SPINB(e),P_SPINS(c),XP(F)::QAR(K)
- S(c);::S(A)
- Refutation
- P(i);N_SPINS(f),P_PINB(J),XQ(K)
- Try
- Q(K);P_PINP(g)
- Threat
- QAB1(K),XS(f)
- Vars
- S(f);N_GUARD,XS(D)::S(A)
- S(f);N_GUARD::S(A)
- Refutation
- K(d);N_SPINP(g),P-FLIGHT,P_SPINB(e),P_SPINS(c),XP(F)
- Try
- Q(K);P_PINS(f),XP(i)
- Threat
- QAB1(K),XS(f)
- Vars
- K(d);N_SPINS(f),OGATEB,P-FLIGHT,P_SPINB(e),P_SPINS(c),XP(F)::QAR2(K)
- S(c);::S(A)
- Refutation
- R(h);P_PINQ(K),XB(J)
- Try
- Actual
- R(H);
- Threat
- QAB1(K),XS(f)
- Vars
- K(d);OGATEB,P-FLIGHT,P_SPINB(e),P_SPINS(c),XP(F)::R(H)
- S(f);N_GUARD,XS(D)::S(A)
- S(f);N_GUARD,XP(I)::S(A)
- B(e);::QAB1(K)
- S(c);::QAB1(K)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
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).