MESON Chess Problem Database
Problem Display
PID: 144193 (Q1N4k/4pK2/4P3/5Bp1/pq6/2n3PN/pb1r3R/1r1n3b w - - 0 1)
Schulz, C Gustav
Magyar Sakkvilag, 1930
#2
8 + 12
SOLUTION
- SOUND
- Sets
- 1...Qa3
- 2.Sf2#
- 1...Qa5
- 2.Sf2#
- 1...Qc5
- 2.Sf2#
- 1...Qd6
- 2.Sf2#
- 1...Qb3
- 2.Sf2#
- 1...Qb5
- 2.Sf2#
- 1...Qb6
- 2.Sf2#
- 1...Qb7
- 2.Sf2#
- 1...Qb8
- 2.Sf2#
- 1...Rg2
- 2.Sb6#
- 1...Rd3
- 2.Sf4#
- 1...Rd4
- 2.Sf4#
- 1...Rd5
- 2.Sf4#
- 1...Rd6
- 2.Sf4#
- 1...Rd7
- 2.Sf4#
- 1...Rd8
- 2.Sf4#
- 1...Be4
- 2.Sf2#
- 1...Se2
- 2.Sf4#
- 1...Se4
- 2.Sf2#
- 1...Sd5
- 2.Sb6#
- 1...g4
- 2.Sf2#
- 1...Qa3
- Tries
- 1.Sxg5+?
- 1...Qh4
- 2.Rxh4#
- 1...Rxh2!
- 1...Qh4
- 1.Sb6+?
- 1...Rd8
- 2.Sf4#
- 2.Qxd8#
- 1...Bxa8!
- 1...Rd8
- 1.Sd6+?
- 1...Qb8
- 2.Sf2#
- 2.Qxb8#
- 1...Bxa8!
- 1...Qb8
- 1.Sa7+?
- 1...Qb8
- 2.Sf2#
- 1...Rd8
- 2.Sf4#
- 2.Qxd8#
- 1...Bxa8!
- 1...Qb8
- 1.Sxe7+?
- 1...Qb8
- 2.Sf2#
- 1...Rd8
- 2.Sf4#
- 2.Qxd8#
- 1...Bxa8!
- 1...Qb8
- 1.Qe4?
- threat
- 2.Sf2#
- 2.Qe5#
- 1...Rxh2
- 2.Qe5#
- 1...Bxe4
- 2.Sf2#
- 1...Sxe4
- 2.Sf2#
- 1...Qa5
- 2.Sf2#
- 1...Qc5
- 2.Sf2#
- 1...Qd6
- 2.Sf2#
- 1...Qd4
- 2.Sf2#
- 1...Qb5
- 2.Sf2#
- 1...Qb8
- 2.Sf2#
- 1...Re2
- 2.Sf2#
- 1...Rf2
- 2.Sxf2#
- 2.Qe5#
- 1...Rg2
- 2.Qe5#
- 1...Rd5
- 2.Sg1#
- 2.Sf2#
- 2.Sf4#
- 2.Sxg5#
- 1...Bg2
- 2.Qe5#
- 1...Bf3
- 2.Qe5#
- 1...Sf2
- 2.Sxf2#
- 2.Qe5#
- 1...Se2
- 2.Sg1#
- 2.Sf2#
- 2.Sf4#
- 2.Sxg5#
- 1...Sb5
- 2.Sf2#
- 1...Sd5
- 2.Sf2#
- 1...Qxe4!
- threat
- 1.Qc6?
- threat
- 2.Qe8#
- 1...Qb5
- 2.Sf2#
- 1...Rd7
- 2.Sf4#
- 1...Rd8
- 2.Sf4#
- 1...Bxc6!
- threat
- 1.Sxg5+?
- Keys
- 1.Qb8!
- threat
- 2.Qe5#
- 1...Qxb8
- 2.Sf2#
- 1...Qa5
- 2.Sf2#
- 1...Qc5
- 2.Sf2#
- 1...Qd6
- 2.Sf2#
- 2.Sxd6#
- 1...Qd4
- 2.Sd6#
- 1...Qe4
- 2.Sd6#
- 1...Qf4
- 2.Sd6#
- 1...Qb5
- 2.Sf2#
- 1...Re2
- 2.Sb6#
- 1...Rd5
- 2.Sf4#
- 1...Rd6
- 2.Sf4#
- 1...Se2
- 2.Sf4#
- 1...Se4
- 2.Sf2#
- 1...Sb5
- 2.Sd6#
- 1...Sd5
- 2.Sb6#
- threat
- 1.Qb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 12
- Sets
- Q(i);N_GUARD::R(A)+S(C)
- Q(i);N_GUARD,P_PINP(E)::R(A)+S(C)
- R(f);N_GUARD,S_CUTB(c)::QAR(G)+S(H)
- R(f);N_GUARD::R(A)+S(C)
- B(c);S_CUTQ(i)::R(A)+S(C)
- S(g);S_CUTR(f)::R(A)+S(C)
- S(g);S_CUTQ(i)::R(A)+S(C)
- S(g);S_CUTB(c),S_CUTR(f)::QAR(G)+S(H)
- P(j);S_CUTQ(i)::R(A)+S(C)
- Tries
- Try
- S(C);CHECK,XP(j)
- Vars
- Q(i);N_GUARD,P_SPINQ(i)::R(A),XQ(i)
- Refutation
- R(f);XR(A)
- Try
- S(H);CHECK
- Refutation
- B(c);XQ(G)
- Try
- S(H);CHECK
- Refutation
- B(c);XQ(G)
- Try
- S(H);CHECK
- Vars
- Q(i);P_SPINQ(i)::R(A)+S(C)
- Refutation
- B(c);XQ(G)
- Try
- S(H);CHECK,XP(k)
- Vars
- Q(i);P_SPINQ(i)::R(A)+S(C)
- Refutation
- B(c);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(f);XR(A)::QAB(G)
- B(c);XQ(G)::R(A)+S(C)
- S(g);XQ(G)::R(A)+S(C)
- Q(i);::R(A)+S(C)
- R(f);::R(A)+S(C)
- R(f);::QAB(G)
- B(c);::QAB(G)
- S(g);::R(A)+S(C)
- Refutation
- Q(i);XQ(G)
- Try
- Q(G);
- Threat
- QAR(G)
- Vars
- Q(i);N_GUARD::R(A)+S(C)
- R(f);N_GUARD::R(A)+S(C)
- Refutation
- B(c);XQ(G)
- Try
- Actual
- Q(G);
- Threat
- QAB(G)
- Vars
- Q(i);N_GUARD,XQ(G)::R(A)+S(C)
- Q(i);N_GUARD::R(A)+S(C)
- Q(i);N_GUARD::QAR(G)+S(H)
- Q(i);N_GUARD,P_PINB(D)::QAR(G)+S(H)
- R(f);N_GUARD::QAR(G)+S(H)
- R(f);N_GUARD::R(A)+S(C)
- S(g);S_CUTR(f)::R(A)+S(C)
- S(g);S_CUTQ(i)::R(A)+S(C)
- S(g);S_CUTQ(i)::QAR(G)+S(H)
- S(g);S_CUTR(f)::QAR(G)+S(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).