MESON Chess Problem Database
Problem Display
PID: 109676 (b1N5/Bn5R/5pK1/r3kP2/8/b5P1/1Nq2R2/rQ5B w - - 0 1)
Warren, CN
White-50 JT, 1930
#2
10 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxb1
- 2.Sc4#
- 1...Qd1
- 2.Sc4#
- 2.Qe4#
- 1...Qb3
- 2.Qe4#
- 1...Qd3
- 2.Sxd3#
- 1...Qa4
- 2.Sd3#
- 1...Qe4
- 2.Qxe4#
- 1...Qxf5+
- 2.Qxf5#
- 1...Qc1
- 2.Sd3#
- 2.Qe4#
- 1...Qxb2
- 2.Qe4#
- 1...Qd2
- 2.Sc4#
- 2.Qe4#
- 1...Qe2
- 2.Rxe2#
- 1...Qxf2
- 2.Sd3#
- 2.Sc4#
- 2.Qe4#
- 1...Qc3
- 2.Qe4#
- 1...Qc4
- 2.Sxc4#
- 1...Qc5
- 2.Qe4#
- 1...Qc6
- 2.Sd3#
- 1...Qc7
- 2.Sd3#
- 2.Re2#
- 2.Qe4#
- 1...Bxb2
- 2.Re7#
- 1...Be7
- 2.Rxe7#
- 1...Sd6
- 2.Re7#
- 1...Qxb1
- Tries
- 1.Re2+?
- 1...Qe4
- 2.Qxe4#
- 1...Qxe2!
- 1...Qe4
- 1.Qxc2?
- threat
- 2.Sd3#
- 2.Sc4#
- 2.Re2#
- 2.Qe4#
- 2.Qe2#
- 2.Qc3#
- 1...Rxa7
- 2.Qe4#
- 2.Qc3#
- 1...Bxb2
- 2.Re2#
- 2.Re7#
- 2.Qe4#
- 2.Qxb2#
- 2.Qe2#
- 1...Rc5
- 2.Qe4#
- 1...Bc5
- 2.Qe4#
- 1...Sc5
- 2.Qc3#
- 1...Rc1
- 2.Sd3#
- 2.Sc4#
- 2.Re2#
- 2.Qe4#
- 2.Qe2#
- 1...Rd1
- 2.Sc4#
- 2.Re2#
- 2.Qe4#
- 2.Qe2#
- 1...Re1
- 2.Sd3#
- 2.Sc4#
- 2.Qc3#
- 1...Ra4
- 2.Sd3#
- 1...Rd5
- 2.Sc4#
- 2.Re2#
- 2.Qe4#
- 2.Qe2#
- 1...Bb4
- 2.Sd3#
- 2.Sc4#
- 2.Re2#
- 2.Qe4#
- 2.Qe2#
- 1...Sd6
- 2.Sd3#
- 2.Re7#
- 2.Qc3#
- 1...Sd8
- 2.Sd3#
- 2.Sc4#
- 2.Qc3#
- 1...Rxh1!
- threat
- 1.Qe1+?
- 1...Qe4
- 2.Qxe4#
- 1...Qe2
- 2.Sd3#
- 2.Sc4#
- 2.Rxe2#
- 2.Qc3#
- 2.Qxe2#
- 1...Rxe1!
- 1...Qe4
- 1.Re2+?
- Keys
- 1.Rd2!
- threat
- 2.Bd4#
- 1...Qxf5+
- 2.Qxf5#
- 1...Qxb2
- 2.Qe4#
- 1...Qxd2
- 2.Sc4#
- 2.Qe4#
- 1...Qxc8
- 2.Qe4#
- 1...Rxa7
- 2.Rd5#
- 1...Bxb2
- 2.Re7#
- 1...Qd3
- 2.Sxd3#
- 1...Qa4
- 2.Sd3#
- 1...Qe4
- 2.Qxe4#
- 1...Qc3
- 2.Qe4#
- 1...Qc4
- 2.Sxc4#
- 1...Qc5
- 2.Qe4#
- 1...Ra4
- 2.Rd5#
- 1...Rc5
- 2.Re7#
- 1...Rd5
- 2.Rxd5#
- 1...Bc5
- 2.Rd5#
- 1...Sc5
- 2.Bb8#
- threat
- 1.Rd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 6
- Sets
- Q(b);N_GUARD,XQ(A)::S(C)
- Q(b);N_PINP(F),OGATE::QAR1(A)
- Q(b);N_GUARD::S(C),XQ(b)
- Q(b);N_GUARD,N_PINP(F)::S(C)
- Q(b);OGATE::QAR1(A),XQ(b)
- Q(b);CHECK,OGATE,XP(F)::QAR1(A),XQ(b)
- Q(b);N_PINP(F),OGATE,XS(C)::QAR1(A)
- Q(b);N_GUARD,N_PINP(F)::R(D),XQ(b)
- Q(b);N_GUARD,N_PINP(F)::S(C),XQ(b)
- B(c);N_GUARD,XS(C)::R(I)
- B(c);N_GUARD::R(I),XB(c)
- S(g);S_CUTB(c)::R(I)
- Tries
- Try
- R(D);CHECK
- Vars
- Q(b);OGATE,P_SPINQ(b)::QAR1(A),XQ(b)
- Refutation
- Q(b);N_PINP(F),XR(D)
- Try
- Q(A);N_SPINP(F),XQ(b)
- Threat
- DUALS(6)
- Vars
- R(d);::QAR1(A)
- B(c);::QAR1(A)
- S(g);::QAB(A)
- R(d);::S(C)
- Refutation
- R(a);XB(B)
- Try
- Q(A);CHECK
- Vars
- Q(b);N_GUARD,P_SPINQ(b)::QAR1(A),XQ(b)
- Refutation
- R(a);XQ(A)
- Try
- Actual
- R(D);
- Threat
- B(H)
- Vars
- Q(b);CHECK,OGATE,XP(F)::QAR1(A),XQ(b)
- Q(b);N_PINP(F),OGATE,XS(C)::QAR1(A)
- Q(b);N_PINP(F),OGATE,XS(J)::QAR1(A)
- R(d);N_GUARD,XB(H)::R1(D)
- B(c);N_GUARD,XS(C)::R(I)
- Q(b);N_GUARD::S(C),XQ(b)
- Q(b);N_GUARD,N_PINP(F)::S(C)
- Q(b);OGATE::QAR1(A),XQ(b)
- Q(b);N_PINP(F),OGATE::QAR1(A)
- Q(b);N_GUARD,N_PINP(F)::S(C),XQ(b)
- R(d);N_GUARD::R1(D)
- R(d);S_CUTB(c)::R(I)
- R(d);N_GUARD::R1(D),XR(d)
- B(c);S_CUTR(d)::R1(D)
- S(g);N_GUARD,S_CUTB(c),S_CUTQ(b)::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).