MESON Chess Problem Database
Problem Display
PID: 137303 (2K1Q3/3p3B/2pP3r/4Nb2/1ppnkP2/4p3/2n1N1P1/3R4 w - - 0 1)
Ellerman, Arnoldo
Magyar Sakkelet, 1963
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Sa1
- 2.Rxd4#
- 1...Se1
- 2.Rxd4#
- 1...Sa3
- 2.Rxd4#
- 1...Sf3
- 2.gxf3#
- 1...Sa1
- Tries
- 1.Sd3+?
- 1...Kd5
- 2.Qe5#
- 1...Se6
- 2.Sc5#
- 1...Re6!
- 1...Kd5
- 1.Sf3+?
- 1...Kd5
- 2.Qe5#
- 1...Se6
- 2.Sg5#
- 1...Re6!
- 1...Kd5
- 1.Sg4+?
- 1...Kd5
- 2.Qe5#
- 1...Re6
- 2.Sf6#
- 1...Se6!
- 1...Kd5
- 1.Sg6+?
- 1...Kd5
- 2.Qe5#
- 1...Se6
- 2.Sg3#
- 1...Be6!
- 1...Kd5
- 1.Sf7+?
- 1...Kd5
- 2.Qe5#
- 1...Se6
- 2.Sg5#
- 1...Re6!
- 1...Kd5
- 1.Sd3+?
- Keys
- 1.Sxd7+!
- 1...Kd5
- 2.Qe5#
- 1...Re6
- 2.Sf6#
- 1...Se6
- 2.Sc5#
- 1...Kd5
- 1.Sxd7+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- S(a);N_GUARD::R1(A),XS(e)
- S(e);OGATE::P(C),XS(e)
- Tries
- Try
- S(E);CHECK
- Vars
- K(f);N_SPINB(g),S_FLIGHT::QAR1(I)
- S(e);P_SPINS(e)::S(E)
- Refutation
- R(i);P_SPINR(i)
- Try
- S(E);CHECK
- Vars
- K(f);N_SPINB(g),P_SPINS(e),S_FLIGHT::QAR1(I)
- S(e);P_SPINS(e)::S(E)
- Refutation
- R(i);P_SPINR(i)
- Try
- S(E);CHECK
- Vars
- K(f);N_SPINB(g),P_SPINS(e),S_FLIGHT::QAR1(I)
- R(i);P_SPINR(i)::S(E)
- Refutation
- S(e);P_SPINS(e)
- Try
- S(E);CHECK,N_PINB(g)
- Vars
- K(f);P_SPINS(e),S_FLIGHT::QAR1(I)
- S(e);P_SPINS(e)::S(B)
- Refutation
- B(g);P_SPINB(g)
- Try
- S(E);CHECK
- Vars
- K(f);N_SPINB(g),P_SPINS(e),S_FLIGHT::QAR1(I)
- S(e);P_SPINS(e)::S(E)
- Refutation
- R(i);P_SPINR(i)
- Try
- Actual
- S(E);CHECK,P_SPINS(E),XP(j)
- Vars
- K(f);N_SPINB(g),P_SPINS(e),S_FLIGHT::QAR1(I)
- R(i);N_PINS(E),P_SPINR(i)::S(E)
- S(e);N_PINS(E),P_SPINS(e)::S(E)
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).