MESON Chess Problem Database
Problem Display
PID: 138625 (8/4pN2/4Nb2/KQ1pB3/3pkpPp/5R1P/3Pnp1P/4nq2 w - - 0 1)
Opalek, Cyril
Banska Bystrica (BABY), 1977
#2
10 + 11
| 6490 | yacpdb | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Kxf3
- 2.Qxd5#
- 1...Qg2
- 2.Qxe2#
- 1...Qxh3
- 2.Qxe2#
- 1...Qg1
- 2.Qxe2#
- 1...Qh1
- 2.Qxe2#
- 1...Bxe5
- 2.Seg5#
- 2.Sfg5#
- 1...Bg5
- 2.Sexg5#
- 1...Bg7
- 2.Seg5#
- 1...Bh8
- 2.Seg5#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sxf3
- 2.Sc5#
- 1...Sc1
- 2.Rxf4#
- 1...Sg1
- 2.Rxf4#
- 1...Sc3
- 2.Rxf4#
- 1...Sg3
- 2.Rxf4#
- 1...Kxf3
- Tries
- 1.Ka6?
- 1...Kxf3
- 2.Qxd5#
- 1...Qxh3
- 2.Qxe2#
- 1...Bxe5
- 2.Seg5#
- 2.Sfg5#
- 1...Sxf3
- 2.Sc5#
- 1...Qg2
- 2.Qxe2#
- 1...Qg1
- 2.Qxe2#
- 1...Qh1
- 2.Qxe2#
- 1...Bg5
- 2.Sexg5#
- 1...Bg7
- 2.Seg5#
- 1...Bh8
- 2.Seg5#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sc1
- 2.Rxf4#
- 1...Sg1
- 2.Rxf4#
- 1...Sc3
- 2.Rxf4#
- 1...Sg3
- 2.Rxf4#
- 1...d3!
- 1...Kxf3
- 1.Kb6?
- 1...Kxf3
- 2.Qxd5#
- 1...Qxh3
- 2.Qxe2#
- 1...Bxe5
- 2.Seg5#
- 2.Sfg5#
- 1...Sxf3
- 2.Sc5#
- 1...Qg2
- 2.Qxe2#
- 1...Qg1
- 2.Qxe2#
- 1...Qh1
- 2.Qxe2#
- 1...Bg5
- 2.Sexg5#
- 1...Bg7
- 2.Seg5#
- 1...Bh8
- 2.Seg5#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sc1
- 2.Rxf4#
- 1...Sg1
- 2.Rxf4#
- 1...Sc3
- 2.Rxf4#
- 1...Sg3
- 2.Rxf4#
- 1...d3!
- 1...Kxf3
- 1.Sfg5+?
- 1...Kxe5
- 2.Qb8#
- 1...Bxg5!
- 1...Kxe5
- 1.Bxf6?
- threat
- 2.Seg5#
- 2.Sfg5#
- 1...Kxf3
- 2.Qxd5#
- 1...Sxf3
- 2.Sc5#
- 1...exf6!
- threat
- 1.Bc7?
- 1...Kxf3
- 2.Qxd5#
- 1...Qxh3
- 2.Qxe2#
- 1...Sxf3
- 2.Sc5#
- 1...Qg2
- 2.Qxe2#
- 1...Qg1
- 2.Qxe2#
- 1...Qh1
- 2.Qxe2#
- 1...Be5
- 2.Seg5#
- 2.Sfg5#
- 1...Bg5
- 2.Sexg5#
- 2.Sfxg5#
- 1...Bg7
- 2.Seg5#
- 2.Sfg5#
- 1...Bh8
- 2.Seg5#
- 2.Sfg5#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sc1
- 2.Rxf4#
- 1...Sg1
- 2.Rxf4#
- 1...Sc3
- 2.Rxf4#
- 1...Sg3
- 2.Rxf4#
- 1...d3!
- 1...Kxf3
- 1.Bb8?
- 1...Kxf3
- 2.Qxd5#
- 1...Qxh3
- 2.Qxe2#
- 1...Sxf3
- 2.Sc5#
- 1...Qg2
- 2.Qxe2#
- 1...Qg1
- 2.Qxe2#
- 1...Qh1
- 2.Qxe2#
- 1...Be5
- 2.Seg5#
- 2.Sfg5#
- 1...Bg5
- 2.Sexg5#
- 2.Sfxg5#
- 1...Bg7
- 2.Seg5#
- 2.Sfg5#
- 1...Bh8
- 2.Seg5#
- 2.Sfg5#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sc1
- 2.Rxf4#
- 1...Sg1
- 2.Rxf4#
- 1...Sc3
- 2.Rxf4#
- 1...Sg3
- 2.Rxf4#
- 1...d3!
- 1...Kxf3
- 1.Qc4?
- 1...Kxf3
- 2.Qxd5#
- 1...Qxh3
- 2.Qxe2#
- 1...Bxe5
- 2.Seg5#
- 2.Sfg5#
- 1...Sxf3
- 2.Sc5#
- 1...Qg2
- 2.Qxe2#
- 1...Qg1
- 2.Qxe2#
- 1...Qh1
- 2.Qxe2#
- 1...Bg5
- 2.Sexg5#
- 1...Bg7
- 2.Seg5#
- 1...Bh8
- 2.Seg5#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sc1
- 2.Rxf4#
- 1...Sg1
- 2.Rxf4#
- 1...Sc3
- 2.Rxf4#
- 1...Sg3
- 2.Rxf4#
- 1...dxc4!
- 1...Kxf3
- 1.d3+?
- 1...Sxd3
- 2.Qxd3#
- 1...Kxf3!
- 1...Sxd3
- 1.Ka6?
- Keys
- 1.Bxd4!
- 1...Kxf3
- 2.Qxd5#
- 1...Qxh3
- 2.Qxe2#
- 1...Bxd4
- 2.Seg5#
- 1...Sxf3
- 2.d3#
- 1...Sxd4
- 2.Rxf4#
- 1...Qg2
- 2.Qxe2#
- 1...Qg1
- 2.Qxe2#
- 1...Qh1
- 2.Qxe2#
- 1...Be5
- 2.Sfg5#
- 1...Bg5
- 2.Sfxg5#
- 1...Bg7
- 2.Sfg5#
- 1...Bh8
- 2.Sfg5#
- 1...Sc2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sc1
- 2.Rxf4#
- 1...Sg1
- 2.Rxf4#
- 1...Sc3
- 2.Rxf4#
- 1...Sg3
- 2.Rxf4#
- 1...Kxf3
- 1.Bxd4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- K(f);S_FLIGHT,XR(C)::QAB(G),XP(i)
- Q(b);N_GUARD::QAR2(G),XS(c)
- Q(b);N_GUARD,XP(D)::QAR2(G),XS(c)
- B(j);N_GUARD::S(I),XB(j)
- B(j);N_GUARD::S(I)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(a);SBLOCK,XR(C)::S(I)
- S(c);N_GUARD::R1(C),XP(g)
- Tries
- Try
- K(F);P-FLIGHT
- Vars
- K(f);S_FLIGHT,XR(C)::QAB(G),XP(i)
- Q(b);N_GUARD,XP(D)::QAR2(G),XS(c)
- S(a);SBLOCK,XR(C)::S(I)
- Q(b);N_GUARD::QAR2(G),XS(c)
- B(j);N_GUARD::S(I),XB(j)
- B(j);N_GUARD::S(I)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(c);N_GUARD,P_PINQ(G)::R1(C),XP(g)
- Refutation
- P(e);
- Try
- K(F);S_FLIGHT
- Vars
- K(f);S_FLIGHT,XR(C)::QAB(G),XP(i)
- Q(b);N_GUARD,XP(D)::QAR2(G),XS(c)
- S(a);SBLOCK,XR(C)::S(I)
- Q(b);N_GUARD::QAR2(G),XS(c)
- B(j);N_GUARD::S(I),XB(j)
- B(j);N_GUARD::S(I)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(c);N_GUARD::R1(C),XP(g)
- Refutation
- P(e);
- Try
- S(J);CHECK
- Vars
- K(f);P-FLIGHT,P_SPINP(i),XB(H)::QAB(G)
- Refutation
- B(j);XS(J)
- Try
- B(H);XB(j)
- Threat
- DUALS(2)
- Vars
- K(f);S_FLIGHT,XR(C)::QAB(G),XP(i)
- S(a);SBLOCK,XR(C)::S(I)
- Refutation
- P(k);XB(H)
- Try
- B(H);
- Vars
- K(f);S_FLIGHT,XR(C)::QAB(G),XP(i)
- Q(b);N_GUARD,XP(D)::QAR2(G),XS(c)
- S(a);SBLOCK,XR(C)::S(I)
- Q(b);N_GUARD::QAR2(G),XS(c)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(c);N_GUARD::R1(C),XP(g)
- Refutation
- P(e);
- Try
- B(H);
- Vars
- K(f);S_FLIGHT,XR(C)::QAB(G),XP(i)
- Q(b);N_GUARD,XP(D)::QAR2(G),XS(c)
- S(a);SBLOCK,XR(C)::S(I)
- Q(b);N_GUARD::QAR2(G),XS(c)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(c);N_GUARD::R1(C),XP(g)
- Refutation
- P(e);
- Try
- Q(G);P_PINP(e)
- Vars
- K(f);N_SPINP(e),S_FLIGHT,XR(C)::QAB(G),XP(i)
- Q(b);N_GUARD,XP(D)::QAR2(G),XS(c)
- S(a);SBLOCK,XR(C)::S(I)
- Q(b);N_GUARD::QAR2(G),XS(c)
- B(j);N_GUARD::S(I),XB(j)
- B(j);N_GUARD::S(I)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(c);N_GUARD::R1(C),XP(g)
- Refutation
- P(i);N_SPINP(e),XQ(G)
- Try
- P(A);CHECK
- Vars
- S(a);OGATE,XP(A)::QAB1(G),XS(a)
- Refutation
- K(f);S_FLIGHT,XR(C)
- Try
- Actual
- B(H);XP(e)
- Vars
- K(f);S_FLIGHT,XR(C)::QAB(G),XP(i)
- Q(b);N_GUARD,XP(D)::QAR2(G),XS(c)
- B(j);N_GUARD,SBLOCK,XB(H)::S(I)
- S(a);N_GUARD,SBLOCK,XR(C)::P(A)
- S(c);N_GUARD,XB(H)::R1(C),XP(g)
- Q(b);N_GUARD::QAR2(G),XS(c)
- B(j);N_GUARD::S(J)
- B(j);N_GUARD::S(J),XB(j)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(c);N_GUARD::R1(C),XP(g)
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).