MESON Chess Problem Database
Problem Display
PID: 140391 (8/2N1p3/4p3/pN2p1KB/Rq2kp2/3r4/R4P2/BQ3b2 w - - 0 1)
McDowell, Michael
The Wangling Wizards, 2005
#2
9 + 9
| 133 | The Problemist Supplement | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Qxa4
- 2.Rxa4#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 1...Bh3
- 2.Re2#
- 1...f3
- 2.Bg6#
- 1...Qxa4
- Tries
- 1.Kg4?
- threat
- 2.Bg6#
- 1...Be2+
- 2.Rxe2#
- 1...Bh3+!
- threat
- 1.Kg6?
- 1...Qxa4
- 2.Rxa4#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 1...Bh3
- 2.Re2#
- 1...f3!
- 1...Qxa4
- 1.Sa3?
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Qb7#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 1...Bh3
- 2.Re2#
- 1...f3
- 2.Bg6#
- 1...Qxa4!
- 1...Qc4
- 1.Sd4?
- threat
- 2.Bf3#
- 2.Bg6#
- 1...Qxb1
- 2.Bg6#
- 1...Qxd4
- 2.Qb7#
- 1...Be2
- 2.Bg6#
- 2.Rxe2#
- 1...Bg2
- 2.Bg6#
- 2.Re2#
- 1...Bh3
- 2.Bf3#
- 2.Re2#
- 1...f3
- 2.Bxf3#
- 2.Bg6#
- 1...exd4!
- threat
- 1.Bc3?
- 1...Qxa4
- 2.Rxa4#
- 1...Qc4
- 2.Rxc4#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 1...Bh3
- 2.Re2#
- 1...f3
- 2.Bg6#
- 1...Qd4!
- 1...Qxa4
- 1.Bg4?
- 1...Qxa4
- 2.Rxa4#
- 1...Bg2
- 2.Re2#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Be2
- 2.Rxe2#
- 1...Bh3
- 2.Re2#
- 1...f3!
- 1...Qxa4
- 1.Rb2?
- 1...Bg2
- 2.Re2#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Be2
- 2.Rxe2#
- 1...Bh3
- 2.Re2#
- 1...f3
- 2.Bg6#
- 1...Qxa4!
- 1...Bg2
- 1.Rd2?
- 1...Bg2
- 2.Re2#
- 2.Qxd3#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Be2
- 2.Rxe2#
- 1...Bh3
- 2.Re2#
- 2.Qxd3#
- 1...f3
- 2.Bg6#
- 1...Qxa4!
- 1...Bg2
- 1.R2a3?
- 1...Qxa4
- 2.Rxa4#
- 1...Bg2
- 2.Qxd3#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Sc3#
- 1...Bh3
- 2.Qxd3#
- 1...f3
- 2.Bg6#
- 1...Be2!
- 1...Qxa4
- 1.Kg4?
- Keys
- 1.Sa7!
- 1...Qxa4
- 2.Rxa4#
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Qb7#
- 1...Be2
- 2.Rxe2#
- 1...Bg2
- 2.Re2#
- 1...Bh3
- 2.Re2#
- 1...f3
- 2.Bg6#
- 1...Qxa4
- 1.Sa7!
This is a version of 407
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(F)
- B(a);N_GUARD::R(C),XB(a)
- B(a);N_GUARD::R(C)
- P(e);SBLOCK::B(H)
- Tries
- Try
- K(G);P-FLIGHT
- Threat
- B(H)
- Vars
- B(a);CHECK,N_GUARD::R(C),XB(a)
- Refutation
- B(a);CHECK
- Try
- K(G);P-FLIGHT
- Vars
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(F)
- B(a);N_GUARD::R(C),XB(a)
- B(a);N_GUARD::R(C)
- Refutation
- P(e);
- Try
- S(F);
- Vars
- Q(c);OGATE::R(E),XQ(c)
- Q(c);OGATE::QAB(B)
- B(a);N_GUARD::R(C),XB(a)
- B(a);N_GUARD::R(C)
- P(e);SBLOCK::B(H)
- Refutation
- Q(c);N_SPINQ(c),XR(E)
- Try
- S(F);N_PINQ(c)
- Threat
- DUALS(2)
- Vars
- Q(c);N_SPINR(b),XQ(B)::B(H)
- Q(c);OGATE,P_SPINQ(c),XS(F)::QAB(B)
- Refutation
- P(g);XS(F)
- Try
- B(A);
- Vars
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- Q(c);OGATE::R(E),XQ(c)
- B(a);N_GUARD::R(C),XB(a)
- B(a);N_GUARD::R(C)
- P(e);SBLOCK::B(H)
- Refutation
- Q(c);
- Try
- B(H);
- Vars
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- B(a);N_GUARD::R(C)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(F)
- B(a);N_GUARD::R(C),XB(a)
- Refutation
- P(e);
- Try
- R(C);
- Vars
- B(a);N_GUARD::R(C)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(F)
- B(a);N_GUARD::R(C),XB(a)
- P(e);SBLOCK::B(H)
- Refutation
- Q(c);N_SPINQ(c),XR(E)
- Try
- R(C);
- Vars
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(F)
- B(a);N_GUARD::R(C),XB(a)
- P(e);SBLOCK::B(H)
- Refutation
- Q(c);N_SPINQ(c),XR(E)
- Try
- R(C);
- Vars
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- B(a);N_GUARD::QAB1(B),XR(b)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);::S(F)
- P(e);SBLOCK::B(H)
- Refutation
- B(a);
- Try
- Actual
- S(F);
- Vars
- Q(c);N_SPINQ(c),OGATE,XR(E)::R(C),XQ(c)
- Q(c);OGATE::R(E),XQ(c)
- Q(c);OGATE::QAB(B)
- B(a);N_GUARD::R(C),XB(a)
- B(a);N_GUARD::R(C)
- P(e);SBLOCK::B(H)
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).