MESON Chess Problem Database
Problem Display
PID: 201664 (2nR2B1/3q2p1/2bbN3/1p1k4/1P1N1Pn1/3P3p/p3r3/K1Q5 w - - 0 1)
Jakab, Arpad
Bekes Sakk, 1922
#2
9 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxe6
- 2.Qc5#
- 1...Qe8
- 2.Qc5#
- 1...Qa7
- 2.Qxc6#
- 1...Qb7
- 2.Qc5#
- 1...Qc7
- 2.Qc5#
- 1...Qe7
- 2.Qc5#
- 2.Qxc6#
- 1...Qf7
- 2.Qc5#
- 2.Qxc6#
- 1...Qxd8
- 2.Qxc6#
- 1...Bxb4
- 2.Qxc6#
- 1...Bxf4
- 2.Qc5#
- 1...Bc5
- 2.Qxc5#
- 1...Be5
- 2.Qc5#
- 2.Qxc6#
- 1...Bc7
- 2.Qc5#
- 2.Qxc6#
- 1...Be7
- 2.Qxc6#
- 1...Bb8
- 2.Qc5#
- 2.Qxc6#
- 1...Bf8
- 2.Qxc6#
- 1...Qxe6
- Tries
- 1.Sxb5?
- threat
- 2.Sc3#
- 2.Sec7#
- 2.Qc4#
- 1...Be5+
- 2.Sed4#
- 1...Qxe6
- 2.Qc4#
- 2.Qc5#
- 1...Rxe6
- 2.Qh1#
- 2.Qc4#
- 1...Bxb4
- 2.Sec7#
- 2.Qc4#
- 1...Bxf4
- 2.Qc5#
- 1...Qf7
- 2.Sec7#
- 2.Qc4#
- 1...Qc7
- 2.Sc3#
- 2.Sbxc7#
- 2.Sexc7#
- 2.Qc4#
- 2.Qc5#
- 1...Re1
- 2.Sc3#
- 2.Sec7#
- 1...Rc2
- 2.Sec7#
- 1...Re4
- 2.Sc3#
- 2.Sec7#
- 1...Bb7
- 2.Sec7#
- 2.Qc4#
- 1...Ba8
- 2.Sec7#
- 2.Qc4#
- 1...Bc5
- 2.Sec7#
- 2.Qc4#
- 2.Qxc5#
- 1...Bc7
- 2.Sexc7#
- 2.Qc4#
- 2.Qc5#
- 1...Be7
- 2.Sec7#
- 2.Qc4#
- 1...Bb8
- 2.Sec7#
- 2.Qc4#
- 2.Qc5#
- 1...Bf8
- 2.Sec7#
- 2.Qc4#
- 1...Se3
- 2.Sc3#
- 2.Sec7#
- 1...Se5
- 2.Sc3#
- 2.Sec7#
- 1...Sb6
- 2.Sc3#
- 2.Sec7#
- 1...Bxb5!
- threat
- 1.Qh1+?
- 1...Re4
- 2.Qxe4#
- 1...Rg2!
- 1...Re4
- 1.Sxb5?
- Keys
- 1.Sf5!
- threat
- 2.Sc7#
- 1...Be5+
- 2.Sed4#
- 1...Qxe6
- 2.Qc5#
- 1...Rxe6
- 2.Qh1#
- 1...Bxf4
- 2.Qc5#
- 1...Qc7
- 2.Sxc7#
- 2.Qc5#
- 1...Bc7
- 2.Sxc7#
- 2.Qc5#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(i);P_SPINB(h),P_SPINQ(i),XS(G)::QAR1(B)
- Q(i);P_SPINB(h)::QAR1(B)
- Q(i);N_GUARD,P_SPINB(h)::QAB1(B),XB(g)
- Q(i);N_GUARD,XR(H)::QAB1(B),XB(g)
- B(h);P_SPINQ(i),XP(D)::QAB1(B),XB(g)
- B(h);N_GUARD,P_SPINQ(i),XP(F)::QAR1(B)
- B(h);N_GUARD,P_SPINQ(i)::QAR1(B),XB(h)
- B(h);P_SPINQ(i)::QAB1(B),XB(g)
- Tries
- Try
- S(E);XP(e)
- Threat
- DUALS(3)
- Vars
- B(h);CHECK,P_SPINQ(i),S_CUTR(b)::B(I)+S(G)
- B(h);N_GUARD,P_SPINQ(i),XP(F)::QAR1(B)
- R(b);::B(I)+S(G),DCHECK
- Refutation
- B(g);XS(E)
- Try
- Q(B);CHECK
- Vars
- R(b);N_GUARD,P_SPINR(b)::QAB1(B),XR(b)
- Refutation
- R(b);P_SPINR(b)
- Try
- Actual
- S(E);
- Threat
- B(I)+S(G),DCHECK
- Vars
- B(h);CHECK,P_SPINQ(i),S_CUTR(b)::B(I)+S(G)
- Q(i);P_SPINB(h),P_SPINQ(i),XS(G)::QAR1(B)
- R(b);N_GUARD,P_SPINR(b),XS(G)::QAB(B)
- B(h);N_GUARD,P_SPINQ(i),XP(F)::QAR1(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).