MESON Chess Problem Database
Problem Display
PID: 255840 (b2R3K/2N3Rp/3b1Qp1/1Np1P3/r3k3/2qnp1P1/1B2P3/8 w - - 0 1)
Lender, Baruch
3rd Prize, Skakbladet, 1981
#2
10 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sxd6#
- 2.Qf3#
- 1...Qd2
- 2.Sxd6#
- 2.Qf3#
- 1...Qb4
- 2.Sxd6#
- 2.Qf3#
- 1...Qa5
- 2.Sxd6#
- 2.Qf3#
- 1...Qxe5
- 2.Qf3#
- 1...Qc1
- 2.Sxd6#
- 2.Qf3#
- 1...Qc2
- 2.Sxd6#
- 2.Qf3#
- 1...Qa3
- 2.Sxd6#
- 2.Qf3#
- 1...Qb3
- 2.Sxd6#
- 2.Qf3#
- 1...Qc4
- 2.Sxd6#
- 2.Qf3#
- 1...Rd4
- 2.Sxc3#
- 1...Bxe5
- 2.Qf3#
- 1...Bxc7
- 2.Sxc3#
- 1...Be7
- 2.Sxc3#
- 1...Bf8
- 2.Sxc3#
- 1...Sc1
- 2.Qf4#
- 1...Se1
- 2.Qf4#
- 1...Sxb2
- 2.Qf4#
- 1...Sf2
- 2.Qf4#
- 1...Sb4
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sxe5
- 2.Qf4#
- 1...Qe1
- Tries
- 1.Bxc3?
- threat
- 2.Sxd6#
- 2.Qf3#
- 1...Bxe5
- 2.Qf3#
- 2.exd3#
- 1...Bxc7
- 2.Qf3#
- 2.exd3#
- 1...Sxe5
- 2.Sxd6#
- 2.Qf4#
- 1...Ra6
- 2.Qf3#
- 1...Be7
- 2.Qf3#
- 2.exd3#
- 1...Bf8
- 2.Qf3#
- 2.exd3#
- 1...Se1
- 2.Sxd6#
- 2.Qf4#
- 1...Sf4
- 2.Sxd6#
- 2.Qxf4#
- 1...Rd4!
- threat
- 1.Re8?
- threat
- 2.Qf3#
- 1...Se1
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Be7!
- threat
- 1.Qxg6+?
- 1...Kxe5
- 2.Qe6#
- 1...hxg6!
- 1...Kxe5
- 1.exd3+?
- 1...Qxd3
- 2.Qf4#
- 1...Kxd3!
- 1...Qxd3
- 1.e6?
- threat
- 2.Sxc3#
- 2.Sxd6#
- 1...Qxb2
- 2.Sxd6#
- 1...Qxf6
- 2.Sxd6#
- 1...Bxg3
- 2.Sxc3#
- 1...Bxc7
- 2.Sxc3#
- 1...Qe1
- 2.Sxd6#
- 2.Qf3#
- 1...Qd2
- 2.Sxd6#
- 2.Qf3#
- 1...Qb4
- 2.Sxd6#
- 2.Qf3#
- 1...Qa5
- 2.Sxd6#
- 2.Qf3#
- 1...Qe5
- 2.Qf3#
- 1...Qc1
- 2.Sxd6#
- 2.Qf3#
- 1...Qc2
- 2.Sxd6#
- 2.Qf3#
- 1...Qa3
- 2.Sxd6#
- 2.Qf3#
- 1...Qb3
- 2.Sxd6#
- 2.Qf3#
- 1...Qc4
- 2.Sxd6#
- 2.Qf3#
- 1...Ra3
- 2.Sxd6#
- 1...Rc4
- 2.Sxd6#
- 1...Rd4
- 2.Sxc3#
- 1...Ra6
- 2.Sxc3#
- 1...Bf4
- 2.Sxc3#
- 1...Be5
- 2.Qf3#
- 1...Be7
- 2.Sxc3#
- 1...Bf8
- 2.Sxc3#
- 1...Se5
- 2.Qf4#
- 1...Qd4!
- threat
- 1.Bxc3?
- Keys
- 1.Re7!
- threat
- 2.Qf3#
- 1...Qxe5
- 2.Sxd6#
- 1...Bxe5
- 2.Sxc3#
- 1...Bxe7
- 2.Sxc3#
- 1...Se1
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- threat
- 1.Re7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 8
- Sets
- Q(a);XP(E)::QAB1(F)
- R(d);SBLOCK::S(D),XQ(a)
- B(g);SBLOCK,XP(E)::QAB1(F)
- B(g);XS(G)::S(D),XQ(a)
- B(g);::S(D),XQ(a)
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD,XB(A)::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- S(b);N_GUARD,XP(E)::QAR1(F)
- Tries
- Try
- B(A);XQ(a)
- Threat
- DUALS(2)
- Vars
- R(d);::QAB1(F)
- Refutation
- R(d);
- Try
- R(I);
- Threat
- QAB1(F)
- Vars
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- Refutation
- B(g);
- Try
- Q(F);CHECK,XP(h)
- Vars
- K(e);OGATEB,P-FLIGHT,P_SPINQ(a),XP(E)::QAR1(F)
- Refutation
- P(i);XQ(F)
- Try
- P(B);CHECK,XS(b)
- Vars
- Q(a);SBLOCK,XP(B)::QAR1(F)
- Refutation
- K(e);P_SPINB(g),S_FLIGHT,XP(B)
- Try
- P(E);
- Threat
- DUALS(2)
- Vars
- Q(a);XB(A)::S(D),XB(g)
- Q(a);P_PINR(H),XQ(F)::S(D),XB(g)
- B(g);XP(C)::S(D),XQ(a)
- B(g);XS(G)::S(D),XQ(a)
- Q(a);::QAB1(F)
- R(d);::S(D),XB(g)
- R(d);::S(D),XQ(a)
- B(g);::S(D),XQ(a)
- B(g);SBLOCK::QAB1(F)
- S(b);N_GUARD,S_CUTB(g)::QAR1(F)
- Refutation
- Q(a);
- Try
- Actual
- R(H);
- Threat
- QAB1(F)
- Vars
- Q(a);P_PINQ(F),P_SPINQ(a),XP(E)::S(D),XB(g)
- B(g);P_PINQ(F),P_SPINB(g),XP(E)::S(D),XQ(a)
- B(g);XR(H)::S(D),XQ(a)
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(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).