MESON Chess Problem Database
Problem Display
PID: 243590 (n3K3/2p1P3/1pR1R3/1Pb1n3/p1PkP3/2p5/4Qp2/B1N2N2 w - - 0 1)
Bajtay, Jozsef
Nepszava, 1928
#2
11 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ba3
- 2.Qe3#
- 1...Bb4
- 2.Qe3#
- 1...Bd6
- 2.Qe3#
- 1...Bxe7
- 2.Qe3#
- 1...Sd3
- 2.Qxd3#
- 1...Sf3
- 2.Qd3#
- 1...Sxc4
- 2.Qd3#
- 1...Sg4
- 2.Qd3#
- 1...Sxc6
- 2.Qd3#
- 1...Sg6
- 2.Qd3#
- 1...Sd7
- 2.Qd3#
- 1...Sf7
- 2.Qd3#
- 1...a3
- 2.Sb3#
- 1...Ba3
- Tries
- 1.Sa2?
- threat
- 2.Bxc3#
- 1...Bb4
- 2.Qe3#
- 1...Sd3!
- threat
- 1.Se3?
- threat
- 2.Sc2#
- 2.Sf5#
- 1...f1Q
- 2.Sc2#
- 1...f1R
- 2.Sc2#
- 1...Sd3
- 2.Qxd3#
- 1...Kxe4!
- threat
- 1.Bb2?
- 1...Bxe7
- 2.Qe3#
- 1...Sxc4
- 2.Qd3#
- 1...Sxc6
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Ba3
- 2.Qe3#
- 1...Bb4
- 2.Qe3#
- 1...Bd6
- 2.Qe3#
- 1...Sf3
- 2.Qd3#
- 1...Sg4
- 2.Qd3#
- 1...Sg6
- 2.Qd3#
- 1...Sd7
- 2.Qd3#
- 1...Sf7
- 2.Qd3#
- 1...a3
- 2.Sb3#
- 1...cxb2!
- 1...Bxe7
- 1.Rxc7?
- 1...Bxe7
- 2.Qe3#
- 1...Sxc4
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Ba3
- 2.Qe3#
- 1...Bb4
- 2.Qe3#
- 1...Bd6
- 2.Rxd6#
- 2.Qe3#
- 1...Sf3
- 2.Qd3#
- 1...Sg4
- 2.Qd3#
- 1...Sc6
- 2.Qd3#
- 1...Sg6
- 2.Qd3#
- 1...Sd7
- 2.Qd3#
- 1...Sf7
- 2.Qd3#
- 1...a3
- 2.Sb3#
- 1...Sxc7+!
- 1...Bxe7
- 1.Red6+?
- 1...Bxd6
- 2.Qe3#
- 1...cxd6!
- 1...Bxd6
- 1.Qc2?
- 1...Kxc4
- 2.Qxa4#
- 1...Bxe7
- 2.Se2#
- 2.Bxc3#
- 1...Sxc4
- 2.Se2#
- 2.Bxc3#
- 2.Qd3#
- 2.Qxc3#
- 1...Sxc6
- 2.Qd3#
- 2.Qxc3#
- 1...Ba3
- 2.Se2#
- 2.Bxc3#
- 1...Bb4
- 2.Se2#
- 1...Bd6
- 2.Se2#
- 2.Bxc3#
- 1...Sd3
- 2.Qxd3#
- 2.Qxc3#
- 1...Sf3
- 2.Qd3#
- 2.Qxc3#
- 1...Sg4
- 2.Qd3#
- 2.Qxc3#
- 1...Sg6
- 2.Qd3#
- 2.Qxc3#
- 1...Sd7
- 2.Qd3#
- 2.Qxc3#
- 1...Sf7
- 2.Qd3#
- 2.Qxc3#
- 1...a3!
- 1...Kxc4
- 1.Qxf2+?
- 1...Kxe4
- 2.Sg3#
- 1...Kxc4!
- 1...Kxe4
- 1.Sa2?
- Keys
- 1.Qd1+!
- 1...Kxc4
- 2.Qxa4#
- 1...Kxe4
- 2.Qg4#
- 1...Sd3
- 2.Qxd3#
- 1...Kxc4
- 1.Qd1+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- B(e);::QAB1(D)
- B(e);XP(J)::QAB1(D)
- S(f);N_GUARD::QAR1(D),XS(f)
- S(f);N_GUARD::QAR1(D)
- S(f);N_GUARD,XP(E)::QAR1(D)
- S(f);N_GUARD,XR(H)::QAR1(D)
- P(c);N_GUARD::S(B)
- Tries
- Try
- S(B);
- Threat
- B(A),XP(b)
- Vars
- B(e);::QAB1(D)
- Refutation
- S(f);
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- P(a);::S(C)
- S(f);N_GUARD::QAR1(D),XS(f)
- Refutation
- K(d);N_SPINP(b),P-FLIGHT,P_SPINS(f),XP(F)
- Try
- B(A);
- Vars
- B(e);XP(J)::QAB1(D)
- S(f);N_GUARD,XP(E)::QAR1(D)
- S(f);N_GUARD,XR(H)::QAR1(D)
- S(f);N_GUARD::QAR1(D),XS(f)
- B(e);::QAB1(D)
- S(f);N_GUARD::QAR1(D)
- P(c);N_GUARD::S(B)
- Refutation
- P(b);N_SPINP(b),XB(A)
- Try
- R(H);XP(h)
- Vars
- B(e);XP(J)::QAB1(D)
- S(f);N_GUARD,XP(E)::QAR1(D)
- S(f);N_GUARD::QAR1(D),XS(f)
- B(e);::QAB1(D)
- S(f);N_GUARD::QAR1(D)
- P(c);N_GUARD::S(B)
- Refutation
- S(i);CHECK,XR(H)
- Try
- R(I);CHECK
- Vars
- B(e);XR(I)::QAB1(D)
- Refutation
- P(h);XR(I)
- Try
- Q(D);
- Vars
- K(d);OGATEB,P-FLIGHT,P_SPINB(e),XP(E)::QAR2(D),XP(c)
- B(e);::S(B)
- Refutation
- P(c);
- Try
- Q(D);CHECK,XP(a)
- Vars
- K(d);N_SPINP(b),P-FLIGHT,P_SPINS(f),XP(F)::S(C)
- Refutation
- K(d);N_SPINP(b),P-FLIGHT,P_SPINB(e),XP(E)
- Try
- Actual
- Q(D);CHECK
- Vars
- K(d);N_SPINP(b),OGATEB,P-FLIGHT,P_SPINB(e),XP(E)::QAR2(D),XP(c)
- K(d);N_SPINP(b),OGATEB,P-FLIGHT,P_SPINS(f),XP(F)::QAR2(D)
- S(f);N_GUARD,P_SPINS(f)::QAR1(D),XS(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).