MESON Chess Problem Database
Problem Display
PID: 76219 (8/3Q4/3pp2p/7q/pP2knB1/K2pN2N/PB1PpR2/5r2 w - - 0 1)
Heyl, Peter
Troll, 2005
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qg6
- 2.Bf3#
- 1...Qf7
- 2.Bf3#
- 1...Qe8
- 2.Bf3#
- 1...Qh4
- 2.Bf3#
- 1...Qa5
- 2.Bf3#
- 1...Qb5
- 2.Bf3#
- 1...Qc5
- 2.Bf3#
- 1...Qd5
- 2.Bf3#
- 1...Qe5
- 2.Bf3#
- 1...Qf5
- 2.Bf3#
- 1...Qg5
- 2.Bf3#
- 1...Ra1
- 2.Rxf4#
- 1...Rb1
- 2.Rxf4#
- 1...Rc1
- 2.Rxf4#
- 1...Rd1
- 2.Rxf4#
- 1...Re1
- 2.Rxf4#
- 1...Rg1
- 2.Rxf4#
- 1...Rh1
- 2.Rxf4#
- 1...Rxf2
- 2.Sxf2#
- 1...Qg6
- Tries
- 1.Sg5+?
- 1...Qxg5
- 2.Bf3#
- 1...hxg5!
- 1...Qxg5
- 1.Bxh5?
- threat
- 2.Bf3#
- 1...Rxf2
- 2.Sxf2#
- 1...Sxh3
- 2.Bg6#
- 2.Qxe6#
- 2.Qh7#
- 1...Sxh5
- 2.Qxe6#
- 2.Qh7#
- 1...e1S!
- threat
- 1.Qb5?
- threat
- 2.Qc4#
- 1...Qxb5
- 2.Bf3#
- 1...Qc5
- 2.Bf3#
- 1...Qd5
- 2.Bf3#
- 1...Qe5
- 2.Bf3#
- 1...Rc1
- 2.Rxf4#
- 1...d5!
- threat
- 1.Qc6+?
- 1...Qd5
- 2.Bf3#
- 1...Sd5
- 2.Qc4#
- 1...d5!
- 1...Qd5
- 1.Qxe6+?
- 1...Qe5
- 2.Bf3#
- 2.Bf5#
- 1...Sxe6!
- 1...Qe5
- 1.Qc8?
- threat
- 2.Qc4#
- 1...Qb5
- 2.Bf3#
- 1...Qc5
- 2.Bf3#
- 1...Qd5
- 2.Bf3#
- 1...Qe5
- 2.Bf3#
- 1...Rc1
- 2.Rxf4#
- 1...d5!
- threat
- 1.Qa7?
- threat
- 2.Qd4#
- 1...Qc5
- 2.Bf3#
- 1...Qd5
- 2.Bf3#
- 1...Qe5
- 2.Bf3#
- 1...e5!
- threat
- 1.Qf7?
- threat
- 2.Qxf4#
- 1...Qxf7
- 2.Bf3#
- 1...Rxf2
- 2.Sxf2#
- 1...Sxh3
- 2.Qf3#
- 1...Qe5
- 2.Bf3#
- 1...Qf5
- 2.Bf3#
- 1...Qg5
- 2.Bf3#
- 1...Sg2
- 2.Qf3#
- 1...Sd5
- 2.Qf3#
- 1...Sg6
- 2.Qf3#
- 1...e5
- 2.Qc4#
- 1...Qxg4!
- threat
- 1.Qg7?
- threat
- 2.Qd4#
- 1...Qc5
- 2.Bf3#
- 1...Qd5
- 2.Bf3#
- 1...Qe5
- 2.Bf3#
- 1...e5!
- threat
- 1.Qh7+?
- 1...Qg6
- 2.Bf3#
- 1...Qf5
- 2.Bf3#
- 1...Sg6!
- 1...Qg6
- 1.Sg5+?
- Keys
- 1.Qc7!
- threat
- 2.Qc4#
- 1...d5
- 2.Qxf4#
- 1...Qb5
- 2.Bf3#
- 1...Qc5
- 2.Bf3#
- 1...Qd5
- 2.Bf3#
- 1...Qe5
- 2.Bf3#
- 1...Rc1
- 2.Rxf4#
- threat
- 1.Qc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 14
- Sets
- Q(g);N_GUARD::B(I)
- Q(g);N_GUARD,P_PINP(H)::B(I)
- R(a);N_GUARD,P_PINP(A)::R1(D),XS(f)
- R(a);N_GUARD::R1(D),XS(f)
- R(a);XR(D)::S(G),XR(a)
- Tries
- Try
- S(G);CHECK
- Vars
- Q(g);XS(G)::B(I)
- Refutation
- P(j);XS(G)
- Try
- B(I);XQ(g)
- Threat
- B(I)
- Vars
- R(a);XR(D)::S(G),XR(a)
- Refutation
- P(b);
- Try
- Q(J);
- Threat
- QAR2(J)
- Vars
- Q(g);N_GUARD,XQ(J)::B(I)
- Q(g);N_GUARD,P_PINP(H)::B(I)
- Q(g);N_GUARD::B(I)
- R(a);N_GUARD::R1(D),XS(f)
- Refutation
- P(h);
- Try
- Q(J);CHECK
- Vars
- Q(g);P_SPINQ(g)::B(I)
- S(f);P_SPINS(f)::QAR2(J)
- Refutation
- P(h);P_SPINP(h)
- Try
- Q(J);CHECK,XP(i)
- Refutation
- S(f);XQ(J)
- Try
- Q(J);
- Threat
- QAR2(J)
- Vars
- Q(g);N_GUARD::B(I)
- Q(g);N_GUARD,P_PINP(H)::B(I)
- R(a);N_GUARD::R1(D),XS(f)
- Refutation
- P(h);
- Try
- Q(J);
- Threat
- QAR1(J)
- Vars
- Q(g);N_GUARD,P_PINP(H)::B(I)
- Q(g);N_GUARD::B(I)
- Refutation
- P(i);
- Try
- Q(J);
- Threat
- QAR1(J),XS(f)
- Vars
- Q(g);N_GUARD,XQ(J)::B(I)
- R(a);XR(D)::S(G),XR(a)
- S(f);OGATE,XS(G)::QAB1(J)
- Q(g);N_GUARD::B(I)
- S(f);OGATE::QAB1(J)
- P(i);OGATE::QAR2(J)
- Refutation
- Q(g);XB(I)
- Try
- Q(J);
- Threat
- QAR1(J)
- Vars
- Q(g);N_GUARD,P_PINP(H)::B(I)
- Q(g);N_GUARD::B(I)
- Refutation
- P(i);
- Try
- Q(J);CHECK
- Vars
- Q(g);P_SPINQ(g)::B(I)
- Refutation
- S(f);P_SPINS(f)
- Try
- Actual
- Q(J);
- Threat
- QAR2(J)
- Vars
- P(h);OGATE::QAR1(J),XS(f)
- Q(g);N_GUARD::B(I)
- Q(g);N_GUARD,P_PINP(H)::B(I)
- R(a);N_GUARD::R1(D),XS(f)
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).