MESON Chess Problem Database
Problem Display
PID: 265032 (8/1qpP2K1/7B/N1pbN1Q1/Rn1k2p1/6r1/1PPn4/3Rb2B w - - 0 1)
Laib, Kurt Friedrich
Die Schwalbe, 1971
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Qe3#
- 2.c3#
- 1...Rg2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Rg1
- Tries
- 1.Sec4?
- threat
- 2.Qf6#
- 2.Qe5#
- 1...Bxh1
- 2.Qe5#
- 1...Bxc4
- 2.Qf6#
- 1...Rg2
- 2.Qe3#
- 2.Qe5#
- 1...Rf3
- 2.Qe5#
- 1...Bg2
- 2.Qe5#
- 1...Bf3
- 2.Qe5#
- 1...Qa6
- 2.Qe5#
- 1...Qc6
- 2.Qe5#
- 1...Qb6
- 2.Qe5#
- 1...Re3
- 2.Qxe3#
- 1...Be4
- 2.Qe5#
- 1...Sd3
- 2.c3#
- 1...Sc6
- 2.Qxd5#
- 1...Sxc2!
- threat
- 1.Sec6+?
- 1...Bxc6
- 2.Qf6#
- 1...Qxc6!
- 1...Bxc6
- 1.Sg6?
- threat
- 2.Qf6#
- 2.Qe5#
- 1...Bxh1
- 2.Qe5#
- 1...Rg2
- 2.Qe3#
- 2.Qe5#
- 1...Rf3
- 2.Qe5#
- 1...Bg2
- 2.Qe5#
- 1...Bf3
- 2.Qe5#
- 1...Qa6
- 2.Qxd5#
- 2.Qe5#
- 1...Qc6
- 2.Qe5#
- 1...Qb6
- 2.Qxd5#
- 2.Qe5#
- 1...Re3
- 2.Qxe3#
- 1...Be4
- 2.Qe5#
- 1...c4!
- threat
- 1.Sf7?
- threat
- 2.Qf6#
- 2.Qe5#
- 1...Bxh1
- 2.Qe5#
- 1...Bxf7
- 2.Qf6#
- 1...Rg2
- 2.Qe3#
- 2.Qe5#
- 1...Rf3
- 2.Qe5#
- 1...Bg2
- 2.Qe5#
- 1...Bf3
- 2.Qe5#
- 1...Qa6
- 2.Qxd5#
- 2.Qe5#
- 1...Qc6
- 2.Qe5#
- 1...Qb6
- 2.Qxd5#
- 2.Qe5#
- 1...Re3
- 2.Qxe3#
- 1...Be4
- 2.Qe5#
- 1...c4!
- threat
- 1.Rxd2+?
- 1...Rd3
- 2.Rxd3#
- 2.Qe3#
- 2.c3#
- 1...Bxd2!
- 1...Rd3
- 1.Sec4?
- Keys
- 1.Sd3!
- threat
- 2.Qf6#
- 2.Qe5#
- 1...Rxd3
- 2.Qf6#
- 1...Bxh1
- 2.Qe5#
- 1...Rg2
- 2.Qe3#
- 2.Qe5#
- 1...Rf3
- 2.Qe5#
- 1...Bg2
- 2.Qe5#
- 1...Bf3
- 2.Qe5#
- 1...Sf3
- 2.Qe3#
- 1...Qa6
- 2.Qxd5#
- 2.Qe5#
- 1...Qc6
- 2.Qe5#
- 1...Qb6
- 2.Qxd5#
- 2.Qe5#
- 1...Re3
- 2.Qxe3#
- 1...Be4
- 2.Qxc5#
- 2.Qe5#
- 1...Sc4
- 2.Sb3#
- 1...Se4
- 2.Qe5#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 1
- Sets
- R(c);N_GUARD::QAB1(H)
- R(c);N_GUARD::QAB1(H),XR(c)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(h);XB(B)::QAB1(H)
- B(h);XS(G)::QAB(H)
- R(c);::QAB1(H)
- B(h);::QAB1(H)
- Q(i);::QAB1(H)
- R(c);N_GUARD::QAB1(H),XR(c)
- S(d);N_SPINS(b),SBLOCK,S_CUTR(c)::P(D)
- S(d);N_GUARD,S_CUTQ(i)::QAR1(H),XB(h)
- Refutation
- S(d);XP(D)
- Try
- S(G);CHECK
- Vars
- B(h);XS(G)::QAB(H)
- Refutation
- Q(i);XS(G)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(h);XB(B)::QAB1(H)
- R(c);::QAB1(H)
- B(h);::QAB1(H)
- Q(i);::QAB1(H)
- R(c);N_GUARD::QAB1(H),XR(c)
- Refutation
- P(g);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(h);XB(B)::QAB1(H)
- B(h);XS(G)::QAB(H)
- R(c);::QAB1(H)
- B(h);::QAB1(H)
- Q(i);::QAB1(H)
- R(c);N_GUARD::QAB1(H),XR(c)
- Refutation
- P(g);
- Try
- R(A);CHECK,P_PINS(d),XS(b)
- Refutation
- B(a);XR(A)
- Try
- Actual
- S(G);N_PINS(b),P_PINS(d)
- Threat
- DUALS(2)
- Vars
- R(c);XS(G)::QAB(H)
- B(h);XB(B)::QAB1(H)
- R(c);::QAB1(H)
- B(h);::QAB1(H)
- S(b);S_CUTR(c)::QAB1(H)
- Q(i);::QAB1(H)
- R(c);N_GUARD::QAB1(H),XR(c)
- S(b);N_GUARD,N_SPINS(d),SBLOCK,S_CUTB(h)::S(F)
- S(b);::QAB1(H)
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).