MESON Chess Problem Database
Problem Display
PID: 103208 (7B/8/8/1R3p1K/N1r1k2p/1Q5N/3PrP2/4n3 w - - 0 1)
Maybee, Edward E
Winnipeg Free Press, 1925
#2
8 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxd2
- 2.Qe3#
- 1...Rxf2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Rc1
- 2.Qd5#
- 1...Rc2
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 1...Rxa4
- 2.Qd5#
- 1...Rb4
- 2.Sc5#
- 2.Rxb4#
- 2.Qd5#
- 1...Rd4
- 2.Sc5#
- 2.Re5#
- 1...Rc5
- 2.Sxc5#
- 1...Rc6
- 2.Qd5#
- 1...Rc7
- 2.Qd5#
- 1...Rc8
- 2.Qd5#
- 1...Sc2
- 2.f3#
- 1...Sg2
- 2.f3#
- 1...Sf3
- 2.d3#
- 1...f4
- 2.Sg5#
- 1...Rxd2
- Tries
- 1.Sb2?
- 1...Rxd2
- 2.Qe3#
- 1...Rxf2
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Rc3
- 2.Qd5#
- 1...Sd3
- 2.Qxd3#
- 1...Rc1
- 2.Qd5#
- 1...Rc2
- 2.Qd5#
- 1...Ra4
- 2.Qd5#
- 1...Rb4
- 2.Rxb4#
- 2.Qd5#
- 1...Rd4
- 2.Re5#
- 1...Rc6
- 2.Qd5#
- 1...Rc7
- 2.Qd5#
- 1...Rc8
- 2.Qd5#
- 1...Sc2
- 2.Qd3#
- 2.f3#
- 1...Sg2
- 2.Qd3#
- 2.f3#
- 1...Sf3
- 2.Qd3#
- 2.d3#
- 1...f4
- 2.Sg5#
- 1...Rc5!
- 1...Rxd2
- 1.Bf6?
- 1...Rxd2
- 2.Qe3#
- 1...Rxf2
- 2.Qe3#
- 1...Rxa4
- 2.Qd5#
- 1...Re3
- 2.Qxe3#
- 1...Rc3
- 2.Qd5#
- 1...Rc5
- 2.Sxc5#
- 1...Rc1
- 2.Qd5#
- 1...Rc2
- 2.Qd5#
- 1...Rb4
- 2.Sc5#
- 2.Rxb4#
- 2.Qd5#
- 1...Rd4
- 2.Sc5#
- 2.Re5#
- 1...Rc6
- 2.Qd5#
- 1...Rc7
- 2.Qd5#
- 1...Rc8
- 2.Qd5#
- 1...Sc2
- 2.f3#
- 1...Sg2
- 2.f3#
- 1...Sf3
- 2.d3#
- 1...f4
- 2.Sg5#
- 1...Sd3!
- 1...Rxd2
- 1.Bg7?
- 1...Rxd2
- 2.Qe3#
- 1...Rxf2
- 2.Qe3#
- 1...Rxa4
- 2.Qd5#
- 1...Re3
- 2.Qxe3#
- 1...Rc3
- 2.Qd5#
- 1...Rc5
- 2.Sxc5#
- 1...Rc1
- 2.Qd5#
- 1...Rc2
- 2.Qd5#
- 1...Rb4
- 2.Sc5#
- 2.Rxb4#
- 2.Qd5#
- 1...Rd4
- 2.Sc5#
- 2.Re5#
- 1...Rc6
- 2.Qd5#
- 1...Rc7
- 2.Qd5#
- 1...Rc8
- 2.Qd5#
- 1...Sc2
- 2.f3#
- 1...Sg2
- 2.f3#
- 1...Sf3
- 2.d3#
- 1...f4
- 2.Sg5#
- 1...Sd3!
- 1...Rxd2
- 1.Ra5?
- 1...Rxd2
- 2.Qe3#
- 1...Rxf2
- 2.Qe3#
- 1...Rxa4
- 2.Rxa4#
- 2.Qd5#
- 1...Re3
- 2.Qxe3#
- 1...Rc3
- 2.Qd5#
- 1...Rc5
- 2.Sxc5#
- 1...Rc1
- 2.Qd5#
- 1...Rc2
- 2.Qd5#
- 1...Rb4
- 2.Sc5#
- 2.Qd5#
- 1...Rd4
- 2.Sc5#
- 2.Re5#
- 1...Rc6
- 2.Qd5#
- 1...Rc7
- 2.Qd5#
- 1...Rc8
- 2.Qd5#
- 1...Sc2
- 2.f3#
- 1...Sg2
- 2.f3#
- 1...Sf3
- 2.d3#
- 1...f4
- 2.Sg5#
- 1...Sd3!
- 1...Rxd2
- 1.Sb2?
- Keys
- 1.Rc5!
- 1...Rxd2
- 2.Qe3#
- 1...Rxf2
- 2.Qe3#
- 1...Rxa4
- 2.Qd5#
- 1...Rxc5
- 2.Sxc5#
- 1...Re3
- 2.Qxe3#
- 1...Rc3
- 2.Qd5#
- 1...Sd3
- 2.Qb7#
- 1...Rc1
- 2.Qd5#
- 1...Rc2
- 2.Qd5#
- 1...Rb4
- 2.Qd5#
- 1...Rd4
- 2.Re5#
- 1...Sc2
- 2.f3#
- 1...Sg2
- 2.f3#
- 1...Sf3
- 2.d3#
- 1...f4
- 2.Sg5#
- 1...Rxd2
- 1.Rc5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- R(b);N_GUARD,XP(A)::QAR1(C)
- R(b);N_GUARD,XP(B)::QAR1(C)
- R(b);N_GUARD::QAR1(C),XR(b)
- R(c);OGATE::QAB1(C)
- R(c);OGATE,XS(E)::QAB1(C)
- R(c);N_GUARD::S(E),XR(c)
- S(a);N_GUARD::P(B)
- S(a);N_GUARD,SBLOCK::P(A)
- P(f);SBLOCK::S(D)
- Tries
- Try
- S(E);
- Vars
- R(b);N_GUARD,XP(A)::QAR1(C)
- R(b);N_GUARD,XP(B)::QAR1(C)
- R(b);N_GUARD::QAR1(C),XR(b)
- R(c);OGATE::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- R(c);SBLOCK::R1(F)
- P(f);SBLOCK::S(D)
- Refutation
- R(c);
- Try
- B(H);
- Vars
- R(b);N_GUARD,XP(A)::QAR1(C)
- R(b);N_GUARD,XP(B)::QAR1(C)
- R(c);OGATE,XS(E)::QAB1(C)
- R(b);N_GUARD::QAR1(C),XR(b)
- R(c);OGATE::QAB1(C)
- R(c);N_GUARD::S(E),XR(c)
- S(a);N_GUARD::P(B)
- S(a);N_GUARD,SBLOCK::P(A)
- P(f);SBLOCK::S(D)
- Refutation
- S(a);
- Try
- B(H);
- Vars
- R(b);N_GUARD,XP(A)::QAR1(C)
- R(b);N_GUARD,XP(B)::QAR1(C)
- R(c);OGATE,XS(E)::QAB1(C)
- R(b);N_GUARD::QAR1(C),XR(b)
- R(c);OGATE::QAB1(C)
- R(c);N_GUARD::S(E),XR(c)
- S(a);N_GUARD::P(B)
- S(a);N_GUARD,SBLOCK::P(A)
- P(f);SBLOCK::S(D)
- Refutation
- S(a);
- Try
- R(F);
- Vars
- R(b);N_GUARD,XP(A)::QAR1(C)
- R(b);N_GUARD,XP(B)::QAR1(C)
- R(b);N_GUARD::QAR1(C),XR(b)
- R(c);OGATE::QAB1(C)
- R(c);N_GUARD::S(E),XR(c)
- S(a);N_GUARD::P(B)
- S(a);N_GUARD,SBLOCK::P(A)
- P(f);SBLOCK::S(D)
- Refutation
- S(a);
- Try
- Actual
- R(F);
- Vars
- R(b);N_GUARD,XP(A)::QAR1(C)
- R(b);N_GUARD,XP(B)::QAR1(C)
- R(c);OGATE,XS(E)::QAB1(C)
- R(c);XR(F)::S(E),XR(c)
- R(b);N_GUARD::QAR1(C),XR(b)
- R(c);OGATE::QAB1(C)
- S(a);SBLOCK::QAB(C)
- R(c);SBLOCK::R1(F)
- S(a);N_GUARD::P(B)
- S(a);N_GUARD,SBLOCK::P(A)
- P(f);SBLOCK::S(D)
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).