MESON Chess Problem Database
Problem Display
PID: 144203 (KQ6/B1N2R2/3pp3/3Pk3/4p3/3pppp1/7q/5b1n w - - 0 1)
Boros, Sandor
Pikler, Robert
Magyar Sakkvilag, 1930
#2
6 + 11
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Qb2#
- 2.Qh8#
- 1...Qa2
- 2.Qh8#
- 1...Qb2
- 2.Qxb2#
- 2.Qh8#
- 1...Qc2
- 2.Qh8#
- 1...Qd2
- 2.Qh8#
- 1...Qe2
- 2.Qh8#
- 1...Qf2
- 2.Qh8#
- 1...Qg2
- 2.Qh8#
- 1...Qh3
- 2.Qb2#
- 1...Qh4
- 2.Qb2#
- 1...Qh5
- 2.Qb2#
- 1...Qh6
- 2.Qb2#
- 1...Qh7
- 2.Qb2#
- 1...Qh8
- 2.Qxh8#
- 1...Be2
- 2.Qb2#
- 1...Bg2
- 2.Qb2#
- 1...Bh3
- 2.Qh8#
- 1...Sf2
- 2.Qb2#
- 1...d2
- 2.Qb2#
- 1...e2
- 2.Qb2#
- 1...f2
- 2.Qb2#
- 1...g2
- 2.Qb2#
- 1...exd5
- 2.Qe8#
- 1...Qg1
- Tries
- 1.Bxe3?
- 1...exd5
- 2.Qe8#
- 1...Qg1
- 2.Qb2#
- 2.Qh8#
- 1...Qb2
- 2.Qxb2#
- 2.Qh8#
- 1...Qc2
- 2.Qh8#
- 1...Qd2
- 2.Qh8#
- 1...Qe2
- 2.Qh8#
- 1...Qf2
- 2.Qh8#
- 1...Qg2
- 2.Qh8#
- 1...Qh3
- 2.Qb2#
- 1...Qh4
- 2.Qb2#
- 1...Qh5
- 2.Qb2#
- 1...Qh6
- 2.Qb2#
- 1...Qh7
- 2.Qb2#
- 1...Qh8
- 2.Qxh8#
- 1...Be2
- 2.Qb2#
- 1...Bg2
- 2.Qb2#
- 1...Bh3
- 2.Qh8#
- 1...Sf2
- 2.Qb2#
- 1...d2
- 2.Qb2#
- 1...f2
- 2.Qb2#
- 1...g2
- 2.Qb2#
- 1...Qa2+!
- 1...exd5
- 1.Rxf3?
- 1...exd5
- 2.Qe8#
- 1...Qh3
- 2.Qb2#
- 1...Qg1
- 2.Qb2#
- 2.Qh8#
- 1...Qa2
- 2.Qh8#
- 1...Qb2
- 2.Qxb2#
- 2.Qh8#
- 1...Qc2
- 2.Qh8#
- 1...Qd2
- 2.Qh8#
- 1...Qe2
- 2.Qh8#
- 1...Qf2
- 2.Qh8#
- 1...Qg2
- 2.Qh8#
- 1...Qh4
- 2.Qb2#
- 1...Qh5
- 2.Qb2#
- 1...Qh6
- 2.Qb2#
- 1...Qh7
- 2.Qb2#
- 1...Qh8
- 2.Qxh8#
- 1...Be2
- 2.Qb2#
- 1...Bg2
- 2.Qb2#
- 1...Bh3
- 2.Qh8#
- 1...Sf2
- 2.Qb2#
- 1...d2
- 2.Qb2#
- 1...e2
- 2.Qb2#
- 1...g2
- 2.Qb2#
- 1...exf3!
- 1...exd5
- 1.Qb4?
- threat
- 2.Bd4#
- 2.Qc3#
- 2.Qd4#
- 1...exd5
- 2.Bd4#
- 2.Qd4#
- 1...Qa2
- 2.Qc3#
- 2.Qd4#
- 1...Qb2
- 2.Qxb2#
- 1...Qc2
- 2.Bd4#
- 2.Qd4#
- 1...Qd2
- 2.Bd4#
- 2.Qd4#
- 1...Qh8+!
- threat
- 1.Qb6?
- threat
- 2.Qd4#
- 1...Qb2
- 2.Qxb2#
- 1...Qh8+!
- threat
- 1.dxe6?
- 1...Qh6
- 2.Qb2#
- 1...Qg1
- 2.Qb2#
- 2.Qh8#
- 1...Qa2
- 2.Qh8#
- 1...Qb2
- 2.Qxb2#
- 2.Qh8#
- 1...Qc2
- 2.Qh8#
- 1...Qd2
- 2.Qh8#
- 1...Qe2
- 2.Qh8#
- 1...Qf2
- 2.Qh8#
- 1...Qg2
- 2.Qh8#
- 1...Qh3
- 2.Qb2#
- 1...Qh4
- 2.Qb2#
- 1...Qh5
- 2.Qb2#
- 1...Qh7
- 2.Qb2#
- 1...Qh8
- 2.Qxh8#
- 1...Be2
- 2.Qb2#
- 1...Bg2
- 2.Qb2#
- 1...Bh3
- 2.Qh8#
- 1...Sf2
- 2.Qb2#
- 1...d2
- 2.Qb2#
- 1...e2
- 2.Qb2#
- 1...f2
- 2.Qb2#
- 1...g2
- 2.Qb2#
- 1...d5!
- 1...Qh6
- 1.Bxe3?
- Keys
- 1.Se8!
- threat
- 2.Qxd6#
- 1...Kxd5
- 2.Qb5#
- threat
- 1.Se8!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 21
- Sets
- Q(c);N_GUARD,P_PINB(B)::QAB(F)
- Q(c);N_GUARD::QAB(F)
- Q(c);N_GUARD,P_PINQ(F)::QAB(F),XQ(c)
- B(a);S_CUTQ(c)::QAB(F)
- S(b);S_CUTQ(c)::QAB(F)
- P(d);S_CUTQ(c)::QAB(F)
- P(e);S_CUTQ(c)::QAB(F)
- P(f);S_CUTQ(c)::QAB(F)
- P(g);S_CUTQ(c)::QAB(F)
- P(k);OGATEB,XP(A)::QAR(F)
- Tries
- Try
- B(B);XP(e)
- Vars
- P(k);OGATEB,XP(A)::QAR(F)
- Q(c);N_GUARD::QAB(F)
- Q(c);N_GUARD,P_PINQ(F)::QAB(F),XQ(c)
- B(a);S_CUTQ(c)::QAB(F)
- S(b);S_CUTQ(c)::QAB(F)
- P(d);S_CUTQ(c)::QAB(F)
- P(f);S_CUTQ(c)::QAB(F)
- P(g);S_CUTQ(c)::QAB(F)
- Refutation
- Q(c);CHECK
- Try
- R(D);XP(f)
- Vars
- P(k);OGATEB,XP(A)::QAR(F)
- Q(c);N_GUARD::QAB(F)
- Q(c);N_GUARD,P_PINB(B)::QAB(F)
- Q(c);N_GUARD,P_PINQ(F)::QAB(F),XQ(c)
- B(a);S_CUTQ(c)::QAB(F)
- S(b);S_CUTQ(c)::QAB(F)
- P(d);S_CUTQ(c)::QAB(F)
- P(e);S_CUTQ(c)::QAB(F)
- P(g);S_CUTQ(c)::QAB(F)
- Refutation
- P(h);XR(D)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- Q(c);N_GUARD::QAB(F),XQ(c)
- Refutation
- Q(c);CHECK
- Try
- Q(F);
- Threat
- QAB1(F)
- Vars
- Q(c);N_GUARD::QAB(F),XQ(c)
- Refutation
- Q(c);CHECK
- Try
- P(A);XP(k)
- Vars
- Q(c);N_GUARD::QAB(F)
- Q(c);N_GUARD,P_PINB(B)::QAB(F)
- Q(c);N_GUARD,P_PINQ(F)::QAB(F),XQ(c)
- B(a);S_CUTQ(c)::QAB(F)
- S(b);S_CUTQ(c)::QAB(F)
- P(d);S_CUTQ(c)::QAB(F)
- P(e);S_CUTQ(c)::QAB(F)
- P(f);S_CUTQ(c)::QAB(F)
- P(g);S_CUTQ(c)::QAB(F)
- Refutation
- P(j);
- Try
- Actual
- S(C);P_PINP(j)
- Threat
- QAB1(F),XP(j)
- Vars
- K(i);N_SPINP(j),OGATEB,P-FLIGHT,XP(A)::QAR2(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).