MESON Chess Problem Database
Problem Display
PID: 107083 (qB3R2/8/R2n1pK1/2Q1b3/1N2pkp1/6p1/4n1pP/3BN3 w - - 0 1)
Groth, Reinhard
Troll, 2006
#2
9 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Sxd5#
- 1...Qxa6
- 2.Sd5#
- 1...Qa7
- 2.Sd5#
- 1...Qxb8
- 2.Sd5#
- 1...Ba1
- 2.Qg5#
- 1...Bb2
- 2.Qg5#
- 1...Bc3
- 2.Qg5#
- 1...Bd4
- 2.Qg5#
- 1...Sc1
- 2.Sxg2#
- 1...Sg1
- 2.Sxg2#
- 1...Sc3
- 2.Sxg2#
- 1...Sd4
- 2.Sxg2#
- 1...Sc4
- 2.Raxf6#
- 2.Rfxf6#
- 1...Sb5
- 2.Bxe5#
- 2.Raxf6#
- 2.Rfxf6#
- 1...Sb7
- 2.Sd5#
- 2.Bxe5#
- 2.Raxf6#
- 2.Rfxf6#
- 1...Sf7
- 2.Rxf6#
- 1...Sc8
- 2.Bxe5#
- 2.Raxf6#
- 2.Rfxf6#
- 1...Se8
- 2.Bxe5#
- 1...gxh2
- 2.Qf2#
- 1...Qd5
- Tries
- 1.Bxd6?
- threat
- 2.Bxe5#
- 2.Rxf6#
- 1...Qxf8
- 2.Sd5#
- 1...Bxd6
- 2.Rxf6#
- 2.Qg5#
- 1...gxh2
- 2.Bxe5#
- 2.Qf2#
- 1...Sd4
- 2.Sxg2#
- 1...e3
- 2.Qxe5#
- 1...Qd5
- 2.Sxd5#
- 2.Rxf6#
- 1...Qb8
- 2.Sd5#
- 2.Rxf6#
- 1...Qc8
- 2.Sd5#
- 2.Bxe5#
- 1...Qd8
- 2.Sd5#
- 2.Bxe5#
- 1...f5
- 2.Bxe5#
- 2.Rxf5#
- 1...Qe8+!
- threat
- 1.Ra3?
- threat
- 2.Sxg2#
- 2.Qe3#
- 1...Qxa3
- 2.Sd5#
- 1...e3
- 2.Qxe3#
- 1...g1S
- 2.Sg2#
- 2.Qe3#
- 1...g1B
- 2.Sg2#
- 1...g1R
- 2.Qe3#
- 1...Qa7
- 2.Sxg2#
- 2.Sd5#
- 1...Ba1
- 2.Sxg2#
- 2.Qf5#
- 2.Qg5#
- 1...Bb2
- 2.Sxg2#
- 2.Qf5#
- 2.Qg5#
- 1...Bc3
- 2.Qg5#
- 1...Bd4
- 2.Sxg2#
- 2.Qf5#
- 2.Qg5#
- 1...Sc3
- 2.Sxg2#
- 1...Sd4
- 2.Sxg2#
- 2.hxg3#
- 1...Sc4
- 2.Sxg2#
- 2.Rxf6#
- 1...Sf5
- 2.Sxg2#
- 1...g1Q!
- threat
- 1.Rxa8?
- threat
- 2.Sd5#
- 1...gxh2
- 2.Qf2#
- 1...Bd4
- 2.Qg5#
- 1...Ba1
- 2.Qg5#
- 1...Bb2
- 2.Qg5#
- 1...Bc3
- 2.Qg5#
- 1...Sc3
- 2.Sxg2#
- 1...e3!
- threat
- 1.Rxf6+?
- 1...Sf5
- 2.Bxe5#
- 2.Rxf5#
- 1...Bxf6!
- 1...Sf5
- 1.Qd4?
- threat
- 2.Sbd3#
- 1...Qxa6
- 2.Sd5#
- 1...Sxd4
- 2.Sxg2#
- 1...gxh2
- 2.Qf2#
- 1...Sc1
- 2.Sxg2#
- 1...Bxd4!
- threat
- 1.Qc1+?
- 1...Sxc1
- 2.Sxg2#
- 1...e3!
- 1...Sxc1
- 1.hxg3+?
- 1...Sxg3
- 2.Sxg2#
- 2.Qf2#
- 1...Kxg3!
- 1...Sxg3
- 1.Bxd6?
- Keys
- 1.Ra4!
- threat
- 2.Sbd3#
- 1...Qxa4
- 2.Sd5#
- 1...gxh2
- 2.Qf2#
- 1...Bd4
- 2.Qg5#
- 1...Sd4
- 2.Sxg2#
- 1...Qd5
- 2.Sxd5#
- 1...Qa6
- 2.Sd5#
- 1...Sc1
- 2.Sxg2#
- 1...Sc4
- 2.Rxf6#
- threat
- 1.Ra4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(j);N_GUARD::S(D),XQ(j)
- Q(j);N_GUARD,XR(F)::S(D)
- Q(j);N_GUARD::S(D)
- Q(j);N_GUARD,XB(H)::S(D)
- B(g);OGATE,P_SPINS(h)::QAB1(E)
- S(a);::S(B),XP(b)
- S(h);N_SPINP(i),OGATE,P_SPINB(g)::R(F),XP(i)
- S(h);OGATE,P_SPINB(g)::B(H),XB(g)
- P(c);N_GUARD,XP(C)::QAR2(E)
- Tries
- Try
- B(H);P_PINB(g),XS(h)
- Threat
- DUALS(2)
- Vars
- Q(j);N_GUARD,N_SPINP(i),XR(I)::S(D)
- S(a);::S(B),XP(b)
- P(d);::QAB1(E),XB(g)
- Refutation
- Q(j);CHECK
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- Q(j);N_GUARD,XR(F)::S(D)
- P(d);::QAB1(E),XP(d)
- P(b);::S(B)
- P(b);::QAB1(E)
- B(g);OGATE,P_SPINS(h)::QAB1(E)
- S(a);::S(B),XP(b)
- S(h);N_SPINP(i),P_SPINB(g)::S(B),XP(b)
- Refutation
- P(b);
- Try
- R(F);XQ(j)
- Threat
- S(D)
- Vars
- P(c);N_GUARD,XP(C)::QAR2(E)
- B(g);OGATE,P_SPINS(h)::QAB1(E)
- S(a);::S(B),XP(b)
- Refutation
- P(d);
- Try
- R(I);CHECK,XP(i)
- Refutation
- B(g);P_SPINS(h),XR(I)
- Try
- Q(E);N_PINP(i),P_PINP(d)
- Threat
- S(D)
- Vars
- Q(j);N_GUARD,XR(F)::S(D)
- S(a);N_SPINP(d),P_SPINP(i),XQ(E)::S(B),XP(b)
- P(c);N_GUARD,XP(C)::QAR2(E)
- S(a);::S(B),XP(b)
- Refutation
- B(g);N_SPINP(d),P_SPINP(i),P_SPINS(h),XQ(E)
- Try
- Q(E);CHECK
- Vars
- S(a);XQ(E)::S(B),XP(b)
- Refutation
- P(d);N_SPINP(i),P_SPINP(d)
- Try
- P(C);CHECK,XP(c)
- Refutation
- K(e);N_SPINP(i),S_FLIGHT,XP(C)
- Try
- Actual
- R(F);
- Threat
- S(D)
- Vars
- Q(j);N_GUARD,XR(F)::S(D)
- P(c);N_GUARD,XP(C)::QAR2(E)
- B(g);OGATE,P_SPINS(h)::QAB1(E)
- S(a);::S(B),XP(b)
- Q(j);N_GUARD::S(D),XQ(j)
- Q(j);N_GUARD::S(D)
- S(h);N_GUARD,P_SPINB(g)::R(I),XP(i)
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).