MESON Chess Problem Database
Problem Display
PID: 75723 (3K4/Q1N4p/p7/kN1n3r/pR1P4/8/Pqn5/2rB3b w - - 0 1)
Arnstam, Knut Anders Olof
2nd Prize, Skakbladet, 1946
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxb4
- 2.Qxa6#
- 1...Sa1
- 2.Rxa4#
- 1...Se1
- 2.Rxa4#
- 1...Sa3
- 2.Rxa4#
- 1...Sce3
- 2.Rxa4#
- 1...Sxd4
- 2.Rxa4#
- 1...Qxb4
- Tries
- 1.Sa3?
- threat
- 2.Qc5#
- 1...Kxb4
- 2.Qc5#
- 1...Qxd4
- 2.Rb5#
- 1...Qxb4
- 2.Qxa6#
- 1...Sxa3
- 2.Rxa4#
- 1...Sxd4
- 2.Rxa4#
- 1...Sdxb4
- 2.Sc4#
- 1...Sxc7
- 2.Qb6#
- 1...Qc3
- 2.Rb5#
- 1...Sa1
- 2.Rxa4#
- 1...Se1
- 2.Rxa4#
- 1...Sce3
- 2.Rxa4#
- 1...Sc3
- 2.Qb6#
- 1...Sde3
- 2.Qb6#
- 1...Sf4
- 2.Qb6#
- 1...Sb6
- 2.Qxb6#
- 1...Sf6
- 2.Qb6#
- 1...Se7
- 2.Qb6#
- 1...Scxb4!
- threat
- 1.Sc3?
- threat
- 2.Rxa4#
- 2.Qc5#
- 1...Kxb4
- 2.Qc5#
- 1...Qxc3
- 2.Rb5#
- 1...Qxa2
- 2.Rb5#
- 2.Qc5#
- 1...Qxb4
- 2.Qxa6#
- 1...Scxb4
- 2.Qc5#
- 1...Sxd4
- 2.Rxa4#
- 1...Sxc3
- 2.Qb6#
- 1...Sxc7
- 2.Rxa4#
- 2.Qb6#
- 1...Qa3
- 2.Rb5#
- 2.Qc5#
- 1...Qb3
- 2.Qc5#
- 1...Sa3
- 2.Rxa4#
- 1...Sde3
- 2.Rxa4#
- 2.Qb6#
- 1...Sf4
- 2.Rxa4#
- 2.Qb6#
- 1...Sb6
- 2.Qxb6#
- 1...Sf6
- 2.Rxa4#
- 2.Qb6#
- 1...Se7
- 2.Rxa4#
- 2.Qb6#
- 1...a3
- 2.Ra4#
- 2.Qc5#
- 1...Sdxb4!
- threat
- 1.Sa3?
- Keys
- 1.Sd6!
- threat
- 2.Qc5#
- 1...Kxb4
- 2.Qc5#
- 1...Qxd4
- 2.Rb5#
- 1...Qxb4
- 2.Qxa6#
- 1...Scxb4
- 2.Sb7#
- 1...Sxd4
- 2.Rxa4#
- 1...Sdxb4
- 2.Sc4#
- 1...Sxc7
- 2.Qb6#
- 1...Qc3
- 2.Rb5#
- 1...Sa1
- 2.Rxa4#
- 1...Se1
- 2.Rxa4#
- 1...Sa3
- 2.Rxa4#
- 1...Sce3
- 2.Rxa4#
- 1...Sc3
- 2.Qb6#
- 1...Sde3
- 2.Qb6#
- 1...Sf4
- 2.Qb6#
- 1...Sb6
- 2.Qxb6#
- 1...Sf6
- 2.Qb6#
- 1...Se7
- 2.Qb6#
- threat
- 1.Sd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 0
- Sets
- Q(c);SBLOCK,XR(C)::QAR1(F),XP(i)
- S(d);::R1(C),XP(e)
- S(d);XP(D)::R1(C),XP(e)
- Tries
- Try
- S(E);
- Threat
- QAR2(F)
- Vars
- K(f);N_SPINP(i),S_FLIGHT,XR(C)::QAB1(F)
- Q(c);N_GUARD,XP(D)::R1(C)
- Q(c);SBLOCK,XR(C)::QAR1(F),XP(i)
- S(d);XS(E)::R1(C),XP(e)
- S(d);XP(D)::R1(C),XP(e)
- S(g);SBLOCK,XR(C)::S(E)
- S(g);N_GUARD,XS(G)::QAB1(F)
- Q(c);N_GUARD::R1(C)
- S(d);::R1(C),XP(e)
- S(g);N_GUARD::QAB1(F)
- S(g);N_GUARD::QAB1(F),XS(g)
- Refutation
- S(d);XR(C)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- K(f);N_SPINP(i),S_FLIGHT,XR(C)::QAB1(F)
- Q(c);N_GUARD,XS(E)::R1(C)
- Q(c);SBLOCK,XR(C)::QAR1(F),XP(i)
- S(d);XR(C)::QAR2(F)
- S(d);XP(D)::R1(C),XP(e)
- S(g);N_GUARD,XS(E)::QAB1(F)
- Q(c);::QAR2(F)
- S(d);::R1(C),XP(e)
- S(g);N_GUARD::QAB1(F),XS(g)
- Refutation
- S(g);XR(C)
- Try
- Actual
- S(E);
- Threat
- QAR2(F)
- Vars
- K(f);N_SPINP(i),S_FLIGHT,XR(C)::QAB1(F)
- Q(c);N_GUARD,XP(D)::R1(C)
- Q(c);SBLOCK,XR(C)::QAR1(F),XP(i)
- S(d);SBLOCK,XR(C)::S(E)
- S(d);XP(D)::R1(C),XP(e)
- S(g);SBLOCK,XR(C)::S(E)
- S(g);N_GUARD,XS(G)::QAB1(F)
- Q(c);N_GUARD::R1(C)
- S(d);::R1(C),XP(e)
- S(g);N_GUARD::QAB1(F)
- S(g);N_GUARD::QAB1(F),XS(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).