MESON Chess Problem Database
Problem Display
PID: 16988 (B6q/N7/1r5n/PPk1n2Q/R7/4p1B1/bP3b2/K1NR4 w - - 0 1)
Gooderson, Arthur R
2nd HM., BCPS, 1945
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Sb3#
- 2.Rd5#
- 1...Bb3
- 2.Sxb3#
- 1...Bc4
- 2.b4#
- 1...Bd5
- 2.Rxd5#
- 1...e2
- 2.Bxf2#
- 1...Bb1
- Tries
- 1.Kxa2?
- threat
- 2.Sb3#
- 2.Rd5#
- 1...Qxa8
- 2.Sb3#
- 1...Rxb5
- 2.Rd5#
- 1...Qd8
- 2.Sb3#
- 1...Rc6
- 2.Sb3#
- 1...Rd6
- 2.Sb3#
- 1...Rb7
- 2.Sb3#
- 1...Qg8+!
- threat
- 1.Bxe5?
- threat
- 2.Sd3#
- 2.Bd6#
- 1...Qxa8
- 2.Bd6#
- 1...Qd8
- 2.Bd6#
- 1...Qh7
- 2.Bd6#
- 1...Rc6
- 2.Bd6#
- 1...Rd6
- 2.Bd4#
- 2.Bxd6#
- 1...Rb7
- 2.Bd6#
- 1...Bb1
- 2.Sb3#
- 2.Bd6#
- 2.Rd5#
- 1...Bc4
- 2.Bd6#
- 2.b4#
- 1...Bd5
- 2.Sd3#
- 2.Rxd5#
- 1...Sf5
- 2.Sd3#
- 1...Qxe5!
- threat
- 1.Qg4?
- threat
- 2.Qb4#
- 2.Qd4#
- 2.b4#
- 1...Rxb5
- 2.Qd4#
- 1...Sexg4
- 2.Sd3#
- 1...Bd5
- 2.Rxd5#
- 2.Qb4#
- 1...Qd8
- 2.Qb4#
- 2.b4#
- 1...Rd6
- 2.Qb4#
- 2.b4#
- 1...Bb3
- 2.Sxb3#
- 2.Qb4#
- 2.Qd4#
- 1...Bc4
- 2.Qd4#
- 2.b4#
- 1...Be1
- 2.Qd4#
- 1...Sd3
- 2.Sxd3#
- 1...Sf3
- 2.Sd3#
- 2.Qb4#
- 1...Sc4
- 2.Sd3#
- 2.Rd5#
- 1...Sc6
- 2.Bd6#
- 1...Sg6
- 2.Sd3#
- 2.Qb4#
- 1...Sd7
- 2.Sd3#
- 2.Qb4#
- 1...Sef7
- 2.Sd3#
- 2.Qb4#
- 1...Sf5
- 2.Qb4#
- 2.b4#
- 1...e2
- 2.Bxf2#
- 2.Qb4#
- 2.b4#
- 1...Shxg4!
- threat
- 1.Qh4?
- threat
- 2.Qb4#
- 2.Qd4#
- 2.b4#
- 1...Rxb5
- 2.Qe7#
- 2.Qd4#
- 1...Bd5
- 2.Rxd5#
- 2.Qb4#
- 1...Qd8
- 2.Qb4#
- 2.b4#
- 1...Rd6
- 2.Qb4#
- 2.b4#
- 1...Bb3
- 2.Sxb3#
- 2.Qb4#
- 2.Qd4#
- 1...Bc4
- 2.Qd4#
- 2.b4#
- 1...Be1
- 2.Qd4#
- 1...Sd3
- 2.Sxd3#
- 1...Sf3
- 2.Sd3#
- 2.Qb4#
- 1...Sc4
- 2.Sd3#
- 2.Rd5#
- 1...Seg4
- 2.Sd3#
- 1...Sc6
- 2.Bd6#
- 1...Sg6
- 2.Sd3#
- 2.Qb4#
- 1...Sd7
- 2.Sd3#
- 2.Qb4#
- 1...Sef7
- 2.Sd3#
- 2.Qb4#
- 1...Sf5
- 2.Qb4#
- 2.b4#
- 1...e2
- 2.Bxf2#
- 2.Qb4#
- 2.b4#
- 1...Shg4!
- threat
- 1.Qxe5+?
- 1...Bd5
- 2.Sb3#
- 2.Sd3#
- 2.Rxd5#
- 2.Qxd5#
- 1...Qxe5!
- 1...Bd5
- 1.b3?
- threat
- 2.Rd5#
- 2.Rc4#
- 1...Qxa8
- 2.Rc4#
- 1...Bxb3
- 2.Sxb3#
- 1...Qd8
- 2.Rc4#
- 1...Rc6
- 2.Rc4#
- 1...Rd6
- 2.Rc4#
- 1...Rb7
- 2.Rc4#
- 1...Sf5
- 2.Rd5#
- 1...Qg8!
- threat
- 1.Kxa2?
- Keys
- 1.Qe2!
- threat
- 2.b4#
- 1...Rxb5
- 2.Qxb5#
- 1...Bd5
- 2.Rxd5#
- 1...Bb3
- 2.Sxb3#
- 1...Be1
- 2.Qxe3#
- 1...Sd3
- 2.Sxd3#
- 1...Sf3
- 2.Sd3#
- 1...Sc4
- 2.Rd5#
- 1...Seg4
- 2.Sd3#
- 1...Sc6
- 2.Bd6#
- 1...Sg6
- 2.Sd3#
- 1...Sd7
- 2.Sd3#
- 1...Sef7
- 2.Sd3#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 2
- Sets
- B(a);N_GUARD::S(B),XB(a)
- B(a);SBLOCK::P(D)
- B(a);N_GUARD,N_SPINS(e)::R1(C),XB(a)
- P(c);OGATEB::B(E),XB(b)
- Tries
- Try
- K(A);P-FLIGHT,XB(a)
- Threat
- DUALS(2)
- Vars
- Q(h);XB(K)::S(B)
- R(f);XP(H)::R1(C)
- Q(h);::S(B)
- R(f);::S(B)
- Refutation
- Q(h);CHECK
- Try
- B(E);XS(e)
- Threat
- DUALS(2)
- Vars
- Q(h);XB(K)::QAR(I)+B(E),DCHECK
- Q(h);::QAR(I)+B(E),DCHECK
- R(f);::QAR(I)+B(E),DCHECK
- S(g);::S(B)
- Refutation
- Q(h);P_PINP(D),P_SPINQ(h),XB(E)
- Try
- Q(I);N_PINS(e)
- Threat
- DUALS(3)
- Vars
- R(f);XP(H)::QAB1(I)
- S(e);N_GUARD,P_PINP(D),XQ(I)::S(B)
- B(b);::QAB1(I)
- S(e);N_GUARD,P_PINP(D)::S(B),XS(e)
- S(e);OGATE,P_PINP(D)::B(E)
- Refutation
- S(g);XQ(I)
- Try
- Q(I);N_PINS(e)
- Threat
- DUALS(3)
- Vars
- B(b);::QAB1(I)
- S(e);N_GUARD,P_PINP(D)::S(B),XS(e)
- S(e);N_GUARD,P_PINP(D)::S(B)
- S(e);OGATE,P_PINP(D)::B(E)
- Refutation
- S(g);
- Try
- Q(I);CHECK,XS(e)
- Refutation
- Q(h);P_PINP(D),XQ(I)
- Try
- P(D);
- Threat
- DUALS(2)
- Vars
- Q(h);XB(K)::R1(F)
- B(a);XP(D)::S(B),XB(a)
- Q(h);::R1(F)
- R(f);::R1(F)
- S(g);N_SPINS(e)::R1(C)
- Refutation
- Q(h);
- Try
- Actual
- Q(I);N_PINS(e)
- Threat
- P(D)
- Vars
- R(f);OGATE,XP(H)::QAR1(I),XR(f)
- B(a);N_GUARD::R1(C),XB(a)
- B(a);N_GUARD::S(B),XB(a)
- B(b);N_GUARD::QAB(I),XP(c)
- S(e);N_GUARD,P_PINP(D)::S(B),XS(e)
- S(e);N_GUARD,P_PINP(D)::S(B)
- S(e);P_PINP(D),S_CUTB(a)::R1(C)
- S(e);OGATE,P_PINP(D)::B(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).