MESON Chess Problem Database
Problem Display
PID: 72538 (8/b1Pp4/1B6/nKnP4/1P4R1/1Bk2P2/bp1NRNQP/1r6 w - - 0 1)
Easter, Norris
Tijdschrift vd NSB, 1931
#2
13 + 8
SOLUTION
- SOUND
- Sets
- 1...Bxb3
- 2.Sxb1#
- 1...Saxb3
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- 1...Sc6
- 2.Rc4#
- 1...Sab7
- 2.Rc4#
- 1...Scxb3
- 2.Sde4#
- 1...Sd3
- 2.Sfe4#
- 1...Bxb3
- Tries
- 1.Sd1+?
- 1...Kd3
- 2.Re3#
- 1...Rxd1!
- 1...Kd3
- 1.Bxa5?
- threat
- 2.Rc4#
- 2.bxc5#
- 1...Bxb3
- 2.Sxb1#
- 1...Sxb3
- 2.Rc4#
- 1...Bb6
- 2.Rc4#
- 1...Sd3
- 2.Rc4#
- 1...Sa4
- 2.Rc4#
- 1...Sa6
- 2.Rc4#
- 1...Se6
- 2.Rc4#
- 1...Sb7
- 2.Rc4#
- 1...Se4!
- threat
- 1.Re3+?
- 1...Sd3
- 2.Sfe4#
- 2.Rxd3#
- 1...Kxd2!
- 1...Sd3
- 1.Qg3?
- threat
- 2.Qe5#
- 1...Bxb3
- 2.Sxb1#
- 1...Saxb3
- 2.Rc4#
- 1...Scxb3
- 2.Sde4#
- 1...Sc4
- 2.Rxc4#
- 1...Sc6
- 2.Rc4#
- 1...Sd3
- 2.Sfe4#
- 1...Se6
- 2.f4#
- 1...d6!
- threat
- 1.bxa5?
- threat
- 2.Rc4#
- 1...Bxb3
- 2.Sxb1#
- 1...Se4!
- threat
- 1.bxc5?
- threat
- 2.Bxa5#
- 1...Bxb3
- 2.Sxb1#
- 1...Sxb3
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- 1...Sc6
- 2.Rc4#
- 1...Sb7
- 2.Rc4#
- 1...Bxb6!
- threat
- 1.c8Q?
- threat
- 2.Qh8#
- 1...Bxb3
- 2.Sxb1#
- 1...Sxb3
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- 1...Sc6
- 2.Rc4#
- 1...Bb8!
- threat
- 1.Sd1+?
- Keys
- 1.Qh3!
- threat
- 2.Qh8#
- 1...Bxb3
- 2.Sxb1#
- 1...Saxb3
- 2.Rc4#
- 1...Scxb3
- 2.Sde4#
- 1...Sc4
- 2.Rxc4#
- 1...Sc6
- 2.Rc4#
- 1...Sd3
- 2.Sfe4#
- 1...Se4
- 2.fxe4#
- 1...Se6
- 2.f4#
- threat
- 1.Qh3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- B(b);N_GUARD,SBLOCK,XB(F)::S(A),XR(a)
- S(e);N_GUARD,XB(F)::R1(I)
- S(e);N_GUARD::R1(I),XS(e)
- S(e);N_GUARD::R1(I)
- S(f);N_GUARD,SBLOCK,XB(F)::S(A)
- S(f);N_GUARD,SBLOCK::S(C)
- Tries
- Try
- S(C);CHECK
- Vars
- K(d);P-FLIGHT::R1(B)
- Refutation
- R(a);XS(C)
- Try
- B(L);XS(e)
- Threat
- DUALS(2)
- Vars
- B(b);N_GUARD,SBLOCK,XB(F)::S(A),XR(a)
- S(f);XB(F)::R1(I)
- B(g);::R1(I)
- S(f);::R1(I)
- Refutation
- S(f);
- Try
- R(B);CHECK
- Refutation
- K(d);S_FLIGHT,XS(A)
- Try
- Q(D);
- Threat
- QAB(D)
- Vars
- B(b);N_GUARD,SBLOCK,XB(F)::S(A),XR(a)
- S(e);N_GUARD,XB(F)::R1(I)
- S(f);N_GUARD,SBLOCK,XB(F)::S(A)
- S(e);N_GUARD::R1(I),XS(e)
- S(e);N_GUARD::R1(I)
- S(f);N_GUARD,SBLOCK::S(C)
- S(f);N_GUARD::QAR(D)+P(G)
- Refutation
- P(h);
- Try
- P(H);XS(e)
- Threat
- R1(I)
- Vars
- B(b);N_GUARD,SBLOCK,XB(F)::S(A),XR(a)
- Refutation
- S(f);
- Try
- P(H);XS(f)
- Threat
- B(L),XS(e)
- Vars
- B(b);N_GUARD,SBLOCK,XB(F)::S(A),XR(a)
- S(e);N_GUARD,XB(F)::R1(I)
- S(e);N_GUARD::R1(I),XS(e)
- S(e);N_GUARD::R1(I)
- Refutation
- B(g);XB(L)
- Try
- P(M);P_PINS(f)
- Threat
- QAB(M)
- Vars
- B(b);N_GUARD,SBLOCK,XB(F)::S(A),XR(a)
- S(e);N_GUARD,XB(F)::R1(I)
- S(e);N_GUARD,N_SPINS(f)::R1(I),XS(e)
- S(e);N_GUARD,N_SPINS(f)::R1(I)
- Refutation
- B(g);
- Try
- Actual
- Q(D);
- Threat
- QAB(D)
- Vars
- B(b);N_GUARD,SBLOCK,XB(F)::S(A),XR(a)
- S(e);N_GUARD,XB(F)::R1(I)
- S(f);N_GUARD,SBLOCK,XB(F)::S(A)
- S(e);N_GUARD::R1(I),XS(e)
- S(e);N_GUARD::R1(I)
- S(f);N_GUARD,SBLOCK::S(C)
- S(f);OGATE::QAR(D)+P(G),XS(f)
- S(f);N_GUARD::QAR(D)+P(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).