MESON Chess Problem Database
Problem Display
PID: 6928 (8/2q5/n3R3/3k1P2/2N5/1B2Bn2/1N2PQ2/2K4b w - - 0 1)
Nord, Karl-Erik
Vart Hem, 1934
#2
9 + 5
| 3098 | FIDE Album (1914-1944) (I) | 1971 |
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Qg3
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Qf4
- 2.Sb6#
- 1...Qa5
- 2.Sd2#
- 2.Sa3#
- 2.Sxa5#
- 2.Sb6#
- 1...Qe5
- 2.Sd2#
- 1...Qb6
- 2.Sxb6#
- 1...Qd6
- 2.Sa5#
- 1...Qb8
- 2.Sb6#
- 1...Qd8
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Qxc4+
- 2.Bxc4#
- 1...Qa7
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Qb7
- 2.Sb6#
- 1...Qd7
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Qe7
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Qf7
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Qg7
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Qh7
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Sc5
- 2.Sb6#
- 1...Qh2
- Tries
- 1.Sd1?
- threat
- 2.Sc3#
- 1...Qe5
- 2.Sd2#
- 1...Qd6
- 2.Sa5#
- 1...Qa5
- 2.Scb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sxa5#
- 2.Sb6#
- 1...Qg7
- 2.Scb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Sd4!
- threat
- 1.Sa4?
- threat
- 2.Sc3#
- 1...Qe5
- 2.Sd2#
- 1...Qd6
- 2.Sa5#
- 1...Qa5
- 2.Scb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sxa5#
- 2.Scb6#
- 1...Qg7
- 2.Sab6#
- 2.Scb2#
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Scb6#
- 1...Sd4!
- threat
- 1.Bc5?
- threat
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 2.e4#
- 1...Qxc5
- 2.e4#
- 1...Sxc5
- 2.Sb6#
- 1...Qe5
- 2.Sd2#
- 1...Qd6
- 2.Sa5#
- 1...Sd4
- 2.Qxd4#
- 1...Se5
- 2.Qd4#
- 1...Qa5
- 2.Sd2#
- 2.Sa3#
- 2.Sxa5#
- 2.Sb6#
- 2.e4#
- 1...Qb6
- 2.Sxb6#
- 2.e4#
- 1...Qb8
- 2.Sb6#
- 2.e4#
- 1...Qb7
- 2.Sb6#
- 2.e4#
- 1...Se1
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 2.Qd4#
- 1...Sg1
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 2.Qd4#
- 1...Sd2
- 2.Sxd2#
- 2.Sb6#
- 2.Qd4#
- 1...Sh2
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 2.Qd4#
- 1...Sh4
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 2.Qd4#
- 1...Sg5
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 2.Qd4#
- 1...Qf4+!
- threat
- 1.Bb6?
- threat
- 2.e4#
- 1...Qf4+
- 2.Se3#
- 1...Qxc4+
- 2.Bxc4#
- 1...Qe5
- 2.Sd2#
- 1...Qd6
- 2.Sa5#
- 1...Se5
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sh2
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sh4
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 1...Sc5!
- threat
- 1.Rd6+?
- 1...Ke4
- 2.Bc2#
- 1...Qxd6!
- 1...Ke4
- 1.Qh4?
- threat
- 2.Qe4#
- 1...Qxc4+
- 2.Bxc4#
- 2.Qxc4#
- 1...Sd4
- 2.Qxd4#
- 1...Qf4
- 2.Sb6#
- 1...Qe5
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxe5#
- 2.Sb6#
- 1...Se1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sh2
- 2.Qd4#
- 1...Se5
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 1...Sc5
- 2.Sb6#
- 1...Sxh4!
- threat
- 1.Sd1?
- Keys
- 1.Ba7!
- threat
- 2.e4#
- 1...Qf4+
- 2.Se3#
- 1...Qxc4+
- 2.Bxc4#
- 1...Qe5
- 2.Sd2#
- 1...Qd6
- 2.Sa5#
- 1...Se5
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sh2
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sh4
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 1...Sc5
- 2.Sb6#
- threat
- 1.Ba7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 8
- REMOVED MATES = 3
- Sets
- Q(e);N_PINS(G),P_PINB(F)::B(E)+S(G),DCHECK
- Q(e);N_PINS(G)::B(E)+S(G)
- Q(e);N_PINS(G)::B(E)+S(G),DCHECK,XQ(e)
- Q(e);N_PINS(G)::B(E)+S(G),DCHECK
- Q(e);CHECK,OGATE,P_SPINQ(e),XS(G)::B(E),XQ(e)
- S(d);N_PINS(G)::B(E)+S(G),DCHECK
- Tries
- Try
- S(B);
- Threat
- S(B)
- Vars
- Q(e);N_PINS(G)::B(E)+S(G)
- Refutation
- S(b);
- Try
- S(B);
- Threat
- S(B)
- Vars
- Q(e);N_PINS(G)::B(E)+S(G)
- Refutation
- S(b);
- Try
- B(F);N_SPINS(G)
- Threat
- DUALS(5)
- Vars
- Q(e);P_PINS(G),XB(F)::P(C)
- S(d);XB(F)::B(E)+S(G),DCHECK
- Q(e);::B(E)+S(G)
- S(b);N_GUARD::QAR1(D),XS(b)
- S(b);N_GUARD::QAR1(D)
- Refutation
- Q(e);CHECK
- Try
- B(F);
- Threat
- P(C)
- Vars
- Q(e);CHECK,N_PINS(G)::B(E)+S(G),DCHECK
- Q(e);CHECK,OGATE,P_SPINQ(e),XS(G)::B(E),XQ(e)
- Q(e);N_PINS(G)::B(E)+S(G)
- S(b);N_GUARD::QAR1(D)
- S(b);N_GUARD::QAR1(D),XS(b)
- Refutation
- S(d);N_PINS(G)
- Try
- R(I);CHECK
- Vars
- K(c);S_FLIGHT::B(E)
- Refutation
- Q(e);N_PINS(G),XR(I)
- Try
- Q(D);
- Threat
- QAB1(D)
- Vars
- S(b);N_GUARD::QAR1(D),XS(b)
- Q(e);N_PINS(G),P_PINB(F)::B(E)+S(G),DCHECK
- S(b);N_GUARD::QAR1(D)
- S(d);N_PINS(G)::B(E)+S(G),DCHECK
- Refutation
- S(b);XQ(D)
- Try
- Actual
- B(F);
- Threat
- P(C)
- Vars
- Q(e);CHECK,N_PINS(G)::B(E)+S(G),DCHECK
- Q(e);CHECK,OGATE,P_SPINQ(e),XS(G)::B(E),XQ(e)
- Q(e);N_PINS(G)::B(E)+S(G)
- S(b);N_GUARD::QAR1(D)
- S(b);N_GUARD::QAR1(D),XS(b)
- S(d);N_PINS(G)::B(E)+S(G),DCHECK
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).