MESON Chess Problem Database
Problem Display
PID: 90920 (6R1/3NB2p/3p2Np/2b2kp1/K1Q3rr/1p5B/3PRnn1/1b6 w - - 0 1)
Krikheli, Iosif Mikhailovich
Die Schwalbe, 1968
#2
9 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Be4
- 2.Qf7#
- 1...Bb4
- 2.Qd5#
- 2.Qe6#
- 2.Qf7#
- 1...Bd4
- 2.Qe6#
- 1...Sd3
- 2.Qe4#
- 1...Se4
- 2.Qd5#
- 1...Se3
- 2.Rxf2#
- 1...Sf4
- 2.Qf7#
- 1...d5
- 2.Re5#
- 1...hxg6
- 2.Rf8#
- 1...Be4
- Tries
- 1.Kb5?
- threat
- 2.Qd5#
- 2.Qe6#
- 2.Qf7#
- 1...hxg6
- 2.Rf8#
- 2.Qf7#
- 1...Be4
- 2.Qf7#
- 1...Be3
- 2.Qd5#
- 1...Bd4
- 2.Qe6#
- 1...Sd3
- 2.Qe6#
- 2.Qf7#
- 2.Qe4#
- 1...Se4
- 2.Qd5#
- 1...Se3
- 2.Rxf2#
- 1...Sf4
- 2.Qf7#
- 1...d5
- 2.Re5#
- 2.Qxd5#
- 1...Bd3!
- threat
- 1.Bxg4+?
- 1...Sxg4
- 2.Qe6#
- 1...Rxg4!
- 1...Sxg4
- 1.Bxd6?
- threat
- 2.Se7#
- 2.Re5#
- 1...hxg6
- 2.Re5#
- 2.Rf8#
- 1...Be4
- 2.Se7#
- 2.Qf7#
- 1...Be3
- 2.Se7#
- 1...Bd4
- 2.Se7#
- 2.Qe6#
- 1...Sd3
- 2.Se7#
- 2.Qe4#
- 1...Se4
- 2.Se7#
- 2.Qd5#
- 1...Se3
- 2.Se7#
- 2.Rxf2#
- 1...Bxd6!
- threat
- 1.Bf8?
- threat
- 2.Se7#
- 1...Be4
- 2.Qf7#
- 1...Bd4
- 2.Qe6#
- 1...Se4
- 2.Qd5#
- 1...d5
- 2.Re5#
- 1...hxg6!
- threat
- 1.Rxf2+?
- 1...Sf4
- 2.Qd5#
- 1...Bxf2!
- 1...Sf4
- 1.Re4?
- threat
- 2.Qd5#
- 2.Qe6#
- 1...Bxe4
- 2.Qf7#
- 1...Sxe4
- 2.Qd5#
- 1...Bd4
- 2.Qe6#
- 1...Sd3
- 2.Qe6#
- 1...Se3
- 2.Qe6#
- 1...d5
- 2.Re5#
- 2.Qxd5#
- 1...Sf4!
- threat
- 1.Re6?
- threat
- 2.Rf6#
- 2.Rf8#
- 1...d5
- 2.Re5#
- 2.Rf6#
- 1...Se4
- 2.Qd5#
- 1...Bd4!
- threat
- 1.d4?
- threat
- 2.Qd5#
- 2.Qe6#
- 2.Qf7#
- 1...Bxd4
- 2.Qe6#
- 1...hxg6
- 2.Rf8#
- 2.Qf7#
- 1...Be4
- 2.Qf7#
- 1...Sd3
- 2.Qe6#
- 2.Qf7#
- 1...Se4
- 2.Qd5#
- 1...Sf4
- 2.Qf7#
- 1...d5
- 2.Re5#
- 2.Qxd5#
- 1...Se3!
- threat
- 1.Kb5?
- Keys
- 1.Bd8!
- threat
- 2.Se7#
- 1...hxg6
- 2.Rf8#
- 1...Be4
- 2.Qf7#
- 1...Bd4
- 2.Qe6#
- 1...Se4
- 2.Qd5#
- 1...d5
- 2.Re5#
- threat
- 1.Bd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- B(a);N_PINQ(E)::QAR2(E)
- B(g);N_PINQ(E)::QAB1(E)
- S(b);N_GUARD,S_CUTB(a)::QAB1(E)
- S(b);N_PINQ(E)::QAR2(E)
- S(c);N_GUARD,S_CUTB(g)::R(B),XS(b)
- S(c);N_PINQ(E)::QAR2(E)
- P(j);N_GUARD::R1(B)
- P(l);SBLOCK,XS(F)::R(I)
- Tries
- Try
- K(D);N_SPINQ(E),S_FLIGHT
- Threat
- DUALS(3)
- Vars
- B(a);::QAR2(E)
- B(g);::QAR2(E)
- B(g);::QAB1(E)
- S(b);::QAR2(E)
- S(c);N_GUARD,S_CUTB(g)::R(B),XS(b)
- S(c);::QAR2(E)
- Refutation
- B(a);P_PINQ(E)
- Try
- B(C);CHECK,N_SPINQ(E),XR(e)
- Vars
- S(b);SBLOCK,XB(C)::QAB1(E)
- Refutation
- R(f);P_PINQ(E),XB(C)
- Try
- B(H);XP(j)
- Threat
- DUALS(2)
- Vars
- B(g);::S(F)
- Refutation
- B(g);XB(H)
- Try
- B(H);
- Threat
- S(F)
- Vars
- B(a);N_PINQ(E)::QAR2(E)
- B(g);N_PINQ(E)::QAB1(E)
- S(b);N_PINQ(E)::QAR2(E)
- P(j);N_GUARD::R1(B)
- Refutation
- P(l);XS(F)
- Try
- R(B);CHECK,XS(b)
- Vars
- S(c);N_PINQ(E),P_SPINS(c)::QAR2(E)
- Refutation
- B(g);XR(B)
- Try
- R(B);N_SPINQ(E)
- Threat
- DUALS(2)
- Vars
- B(a);SBLOCK,XR(B)::QAR2(E)
- S(b);XR(B)::QAR2(E)
- B(g);::QAB1(E)
- S(b);::QAB1(E)
- S(c);::QAB1(E)
- Refutation
- S(c);
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- S(b);N_PINQ(E)::QAR2(E)
- Refutation
- B(g);N_PINQ(E)
- Try
- P(A);N_SPINQ(E)
- Threat
- DUALS(3)
- Vars
- B(g);XP(A)::QAB1(E)
- B(a);::QAR2(E)
- S(b);::QAR2(E)
- S(c);::QAR2(E)
- Refutation
- S(c);
- Try
- Actual
- B(H);
- Threat
- S(F)
- Vars
- P(l);SBLOCK,XS(F)::R(I)
- B(a);N_PINQ(E)::QAR2(E)
- B(g);N_PINQ(E)::QAB1(E)
- S(b);N_PINQ(E)::QAR2(E)
- P(j);N_GUARD::R1(B)
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).