MESON Chess Problem Database
Problem Display
PID: 162246 (3qrn2/1B5b/5P2/1N1p3R/4kpQ1/2B1Np2/n2K3p/8 w - - 0 1)
Shire, David J
The Problemist, 2016
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Qa5
- 2.Sd6#
- 2.Bxd5#
- 1...Qb6
- 2.Bxd5#
- 1...Qxf6
- 2.Bxd5#
- 1...Qc7
- 2.Bxd5#
- 1...Qe7
- 2.Bxd5#
- 1...Qd6
- 2.Sxd6#
- 1...Qa8
- 2.Sd6#
- 1...Qb8
- 2.Bxd5#
- 1...Qc8
- 2.Sd6#
- 2.Bxd5#
- 1...Re5
- 2.Rxe5#
- 1...Bf5
- 2.Qxf5#
- 1...Bg8
- 2.Qf5#
- 1...Se6
- 2.Re5#
- 1...Sg6
- 2.Qf5#
- 1...Sd7
- 2.Sd6#
- 2.Bxd5#
- 1...Qa5
- Tries
- 1.Sd1?
- threat
- 2.Sf2#
- 1...Qb6
- 2.Bxd5#
- 1...f2
- 2.Sxf2#
- 2.Qe2#
- 1...h1S!
- threat
- 1.Sxd5?
- threat
- 2.Qxf4#
- 1...Qxd5+
- 2.Bxd5#
- 1...Qxf6
- 2.Sxf6#
- 1...Qc7
- 2.Sdxc7#
- 1...Qd6
- 2.Sxd6#
- 1...Se6
- 2.Re5#
- 1...Sg6
- 2.Qf5#
- 1...Qb8!
- threat
- 1.Sf5?
- threat
- 2.Sg3#
- 1...Bxf5
- 2.Qxf5#
- 1...h1S!
- threat
- 1.Rh4?
- threat
- 2.Qxf4#
- 1...Qxf6
- 2.Bxd5#
- 1...Qc7
- 2.Bxd5#
- 1...Qd6
- 2.Sxd6#
- 1...Qb8
- 2.Bxd5#
- 1...Sg6
- 2.Qf5#
- 1...Se6!
- threat
- 1.Rxd5?
- threat
- 2.Rd6#
- 2.Rd7#
- 2.Rxd8#
- 1...Qxd5+
- 2.Bxd5#
- 1...Qxf6
- 2.Re5#
- 2.Rd6#
- 1...Sxc3
- 2.Sxc3#
- 1...Qa5
- 2.Sd6#
- 2.Rd3#
- 2.Rc5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Qb6
- 2.Re5#
- 1...Qc7
- 2.Re5#
- 1...Qe7
- 2.Re5#
- 2.Rd7#
- 1...Qd6
- 2.Sxd6#
- 2.Rxd6#
- 1...Qd7
- 2.Rxd7#
- 1...Qa8
- 2.Sd6#
- 2.Re5#
- 1...Qb8
- 2.Re5#
- 1...Qc8
- 2.Sd6#
- 2.Re5#
- 1...Re5
- 2.Rd4#
- 1...Re6
- 2.Rd6#
- 1...Re7
- 2.Rd7#
- 1...Bg8
- 2.Qf5#
- 1...Sd7
- 2.Sd6#
- 2.Rd3#
- 2.Rc5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rd6#
- 2.Rxd7#
- 1...Sb4!
- threat
- 1.Rf5?
- threat
- 2.Rxf4#
- 2.Qxf4#
- 1...Qxf6
- 2.Bxd5#
- 2.Qxf4#
- 1...Bxf5
- 2.Qxf5#
- 1...Sxc3
- 2.Qxf4#
- 1...Qc7
- 2.Bxd5#
- 1...Qd6
- 2.Sxd6#
- 1...Qb8
- 2.Bxd5#
- 1...Se6
- 2.Re5#
- 1...Sg6!
- threat
- 1.Qe6+?
- 1...Sxe6
- 2.Re5#
- 1...Rxe6!
- 1...Sxe6
- 1.Sd1?
- Keys
- 1.Sg2!
- threat
- 2.Qxf4#
- 1...Qxf6
- 2.Bxd5#
- 1...fxg2
- 2.Qe2#
- 1...Qc7
- 2.Bxd5#
- 1...Qd6
- 2.Sxd6#
- 1...Qb8
- 2.Bxd5#
- 1...Se6
- 2.Re5#
- 1...Sg6
- 2.Qf5#
- threat
- 1.Sg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- Q(h);N_GUARD::B(H),XP(f)
- Q(h);N_GUARD,XP(G)::B(H),XP(f)
- Q(h);N_GUARD::S(E),XQ(h)
- Q(h);N_GUARD::S(E)
- R(i);N_GUARD::R1(F),XR(i)
- B(g);N_GUARD::QAB1(D),XB(g)
- B(g);N_GUARD::QAB1(D)
- S(j);S_CUTR(i)::R1(F)
- S(j);S_CUTB(g)::QAB1(D)
- Tries
- Try
- S(C);
- Threat
- S(C)
- Vars
- Q(h);N_GUARD::B(H),XP(f)
- Refutation
- P(b);
- Try
- S(C);P_SPINS(C),XP(f)
- Threat
- QAR1(D),XP(e)
- Vars
- Q(h);CHECK,OGATE,P_SPINQ(h),XS(C)::B(H),XQ(h)
- Q(h);N_PINS(C),XP(G)::B(H)+S(C),DCHECK,XQ(h)
- Q(h);N_PINS(C)::B(H)+S(C),XQ(h)
- Q(h);N_GUARD::S(E),XQ(h)
- S(j);S_CUTR(i)::R1(F)
- S(j);S_CUTB(g)::QAB1(D)
- Refutation
- Q(h);N_PINS(C)
- Try
- S(C);
- Threat
- S(C)
- Vars
- B(g);OGATE,XS(C)::QAB1(D),XB(g)
- Refutation
- P(b);
- Try
- R(F);
- Threat
- QAR1(D),XP(e)
- Vars
- Q(h);N_GUARD,XP(G)::B(H),XP(f)
- Q(h);N_GUARD::B(H),XP(f)
- Q(h);N_GUARD::S(E),XQ(h)
- S(j);S_CUTB(g)::QAB1(D)
- Refutation
- S(j);
- Try
- R(F);P_SPINR(F),XP(f)
- Threat
- DUALS(3)
- Vars
- Q(h);CHECK,OGATE,P_SPINQ(h),XR(F)::B(H),XQ(h)
- S(a);XB(B)::S(E),XS(a)
- Q(h);N_PINR(F)::B(H)+R(F),DCHECK
- Q(h);::B(H)+R(F),XQ(h)
- R(i);SBLOCK::B(H)+R(F),DCHECK
- R(i);::B(H)+R(F)
- B(g);N_GUARD::QAB1(D)
- Refutation
- S(a);
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- B(g);OGATE,XR(F)::QAB1(D),XB(g)
- S(a);XB(B)::QAR1(D),XP(e)
- Q(h);N_GUARD::B(H),XP(f)
- Q(h);N_GUARD::S(E),XQ(h)
- S(j);S_CUTR(i)::R1(F)
- Refutation
- S(j);
- Try
- Q(D);CHECK,N_PINP(e),P_PINP(f)
- Vars
- S(j);XQ(D)::R1(F)
- Refutation
- R(i);XQ(D)
- Try
- Actual
- S(C);
- Threat
- QAR1(D),XP(e)
- Vars
- Q(h);N_GUARD,XP(G)::B(H),XP(f)
- P(c);OGATE,XS(C)::QAR2(D)
- Q(h);N_GUARD::B(H),XP(f)
- Q(h);N_GUARD::S(E),XQ(h)
- S(j);S_CUTR(i)::R1(F)
- S(j);S_CUTB(g)::QAB1(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).