MESON Chess Problem Database
Problem Display
PID: 197798 (8/1bpR3K/1pp5/1Pk1pp2/1N5p/1P1Q4/rrqB1Nn1/2R2B2 w - - 0 1)
Beal, Edward W
Die Schwalbe, 1974
#2
10 + 12
SOLUTION
- SOUND
- Sets
- 1...Qc3
- 2.Qxc3#
- 1...Qc4
- 2.Qxc4#
- 1...Se1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf4
- 2.Qe3#
- 1...e4
- 2.Qd4#
- 1...f4
- 2.Se4#
- 1...cxb5
- 2.Qxb5#
- 1...Qc3
- Tries
- 1.Sxa2?
- threat
- 2.Bb4#
- 1...Rxa2
- 2.b4#
- 1...cxb5
- 2.Qxb5#
- 1...Qc4
- 2.Qxc4#
- 1...Qc3
- 2.Rxc3#
- 2.Qxc3#
- 1...Rxb3!
- threat
- 1.Sxc2?
- threat
- 2.Bb4#
- 2.Qc4#
- 2.Qc3#
- 1...Rxc2
- 2.b4#
- 1...Rxb3
- 2.Qc4#
- 1...cxb5
- 2.Qxb5#
- 2.Qc3#
- 1...Se3
- 2.Bxe3#
- 2.Bb4#
- 2.Qxe3#
- 1...Ra4!
- threat
- 1.Sxc6?
- threat
- 2.Bb4#
- 2.Rd5#
- 2.Qd5#
- 1...Rxb3
- 2.Rd5#
- 2.Qd5#
- 1...Qc4
- 2.Rd5#
- 2.Qxc4#
- 2.Qd5#
- 1...Qc3
- 2.Rxc3#
- 2.Rd5#
- 2.Qxc3#
- 2.Qd5#
- 1...Ra4
- 2.Rd5#
- 2.Qd5#
- 1...Se3
- 2.Bxe3#
- 2.Bb4#
- 2.Qxe3#
- 1...Sf4
- 2.Be3#
- 2.Bb4#
- 2.Qe3#
- 1...f4
- 2.Se4#
- 2.Bb4#
- 2.Rd5#
- 1...Bxc6!
- threat
- 1.Bg5?
- threat
- 2.Be7#
- 1...Qc4
- 2.Qxc4#
- 1...Kxb4!
- threat
- 1.Qe4?
- threat
- 2.Qxe5#
- 1...fxe4
- 2.Sxe4#
- 1...cxb5
- 2.Sfd3#
- 2.Sbd3#
- 1...Qc3
- 2.Rxc3#
- 1...Se3
- 2.Bxe3#
- 2.Qxe3#
- 1...Sf4
- 2.Be3#
- 2.Qe3#
- 1...f4!
- threat
- 1.Qg3?
- threat
- 2.Qxe5#
- 1...f4+
- 2.Se4#
- 1...cxb5
- 2.Sfd3#
- 1...Qc3
- 2.Qxc3#
- 1...Se3
- 2.Qxe3#
- 1...Sf4
- 2.Qe3#
- 1...e4
- 2.Qe5#
- 1...hxg3!
- threat
- 1.bxc6?
- threat
- 2.Rd5#
- 2.Qb5#
- 2.Qd5#
- 1...Qc3
- 2.Qb5#
- 2.Qxc3#
- 1...Qc4
- 2.Rd5#
- 2.Qxc4#
- 2.Qd5#
- 1...b5
- 2.Qxb5#
- 1...Ra5
- 2.Rd5#
- 2.Qd5#
- 1...Ba6
- 2.Rd5#
- 2.Qd5#
- 1...Se3
- 2.Qb5#
- 2.Qxe3#
- 1...Sf4
- 2.Qb5#
- 2.Qe3#
- 1...f4
- 2.Se4#
- 2.Rd5#
- 1...Bxc6!
- threat
- 1.Sxa2?
- Keys
- 1.Qxf5!
- threat
- 2.Se4#
- 1...cxb5
- 2.Sfd3#
- 1...Qc3
- 2.Qf8#
- 1...Qc4
- 2.Qxe5#
- threat
- 1.Qxf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- Q(c);N_GUARD::QAR2(F),XQ(c)
- Q(c);N_GUARD::QAR1(F),XQ(c)
- S(d);N_GUARD::QAB(F)
- S(d);N_GUARD::QAB(F),XS(d)
- P(g);N_GUARD::QAB1(F)
- P(h);N_GUARD,P_PINQ(F)::S(D)
- P(j);OGATE,XP(H)::QAR1(F),XP(j)
- Tries
- Try
- S(G);XR(a)
- Threat
- B(C)
- Vars
- R(b);N_GUARD,XS(G)::P(E)
- P(j);OGATE,XP(H)::QAR1(F),XP(j)
- Q(c);N_GUARD::QAR1(F),XQ(c)
- Refutation
- R(b);XP(E)
- Try
- S(G);XQ(c)
- Threat
- DUALS(3)
- Vars
- R(b);N_GUARD,P_SPINR(b),XS(G)::P(E)
- R(b);XP(E)::QAR1(F)
- Refutation
- R(a);
- Try
- S(G);XP(j)
- Threat
- DUALS(3)
- Refutation
- B(k);XS(G)
- Try
- B(C);
- Threat
- B(C)
- Vars
- Q(c);N_GUARD::QAR1(F),XQ(c)
- Refutation
- K(f);N_SPINQ(c),S_FLIGHT,XS(G)
- Try
- Q(F);
- Threat
- QAR2(F),XP(g)
- Vars
- P(h);XQ(F)::S(D),XP(h)
- Q(c);OGATE::R(A),XQ(c)
- Refutation
- P(h);P_PINQ(F)
- Try
- Q(F);
- Threat
- QAR2(F),XP(g)
- Vars
- P(h);CHECK,N_GUARD::S(D)
- P(j);SBLOCK,XP(H)::S(D)
- Q(c);N_GUARD::QAR2(F),XQ(c)
- S(d);N_GUARD::QAB(F),XS(d)
- S(d);N_GUARD::QAB(F)
- P(g);::QAR2(F)
- Refutation
- P(e);XQ(F)
- Try
- P(H);XP(j)
- Threat
- DUALS(3)
- Vars
- P(i);::QAR1(F),XP(i)
- Refutation
- B(k);XP(H)
- Try
- Actual
- Q(F);P_PINP(g),P_SPINQ(F),XP(h)
- Threat
- S(D)
- Vars
- P(j);SBLOCK,XP(H)::S(D)
- Q(c);N_PINQ(F)::QAB(F)
- Q(c);N_PINQ(F)::QAR2(F),XP(g)
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).