MESON Chess Problem Database
Problem Display
PID: 232580 (B1R5/1nqr4/3p4/3kpNN1/Q1R1p3/5b2/8/2Kn4 w - - 0 1)
Heyl, Peter
Freie Presse, 2002
#2
7 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qa5
- 2.Qc6#
- 2.Qxa5#
- 1...Qb8
- 2.Qb5#
- 2.Qc6#
- 2.Qa5#
- 1...Qd8
- 2.Qb5#
- 2.Qc6#
- 1...Qxc4+
- 2.Qxc4#
- 1...Qc6
- 2.Qxc6#
- 1...Sb2
- 2.Se3#
- 1...Sf2
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Qa5
- Tries
- 1.Bxb7+?
- 1...Qc6
- 2.Bxc6#
- 2.Qb5#
- 2.Qxc6#
- 1...Qxb7!
- 1...Qc6
- 1.R4xc7?
- threat
- 2.Bxb7#
- 2.Qb3#
- 2.Qb5#
- 2.Qc6#
- 2.Qa2#
- 2.Qc4#
- 2.Qa5#
- 1...Be2
- 2.Bxb7#
- 2.Qc6#
- 2.Qxe4#
- 1...Sb2
- 2.Se3#
- 2.Bxb7#
- 2.Qb5#
- 2.Qc6#
- 2.Qa5#
- 1...Sc3
- 2.Se3#
- 2.Bxb7#
- 2.Qb3#
- 2.Qc6#
- 2.Qc4#
- 1...Se3
- 2.Sxe3#
- 2.Bxb7#
- 2.Qb5#
- 2.Qc6#
- 2.Qa5#
- 1...Rxc7+!
- threat
- 1.R8xc7?
- threat
- 2.Bxb7#
- 2.Qb5#
- 2.Qc6#
- 2.Qa5#
- 1...Sc3
- 2.Se3#
- 2.Bxb7#
- 2.Qc6#
- 1...Rxc7!
- threat
- 1.Qxd1+?
- 1...Bxd1
- 2.Se3#
- 1...Kxc4!
- 1...Bxd1
- 1.Qb3?
- threat
- 2.R4xc7#
- 1...Qxc4+
- 2.Qxc4#
- 1...Qxc8
- 2.Rc7#
- 2.Rxc8#
- 1...Qb6
- 2.Rb4#
- 2.Rd4#
- 2.R4c5#
- 1...Qa5
- 2.Rc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Rxe4#
- 2.R4c5#
- 2.R4c6#
- 2.R4c7#
- 1...Qb8
- 2.Rc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Rxe4#
- 2.R4c5#
- 2.R4c6#
- 2.R4c7#
- 2.Qb5#
- 1...Qd8
- 2.Rc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Rxe4#
- 2.R4c5#
- 2.R4c6#
- 2.R4c7#
- 2.Qb5#
- 1...Qc5
- 2.R4xc5#
- 1...Qc6
- 2.R4xc6#
- 1...Sb2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Be2!
- threat
- 1.Qa2?
- threat
- 2.R4xc7#
- 1...Qxc4+
- 2.Qxc4#
- 1...Qxc8
- 2.Rc7#
- 2.Rxc8#
- 1...Qb6
- 2.Rb4#
- 2.Rd4#
- 2.R4c5#
- 1...Qa5
- 2.Ra4#
- 2.Rd4#
- 2.R4c5#
- 2.Qxa5#
- 1...Qb8
- 2.Rc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Rxe4#
- 2.R4c5#
- 2.R4c6#
- 2.R4c7#
- 2.Qd2#
- 2.Qa5#
- 1...Qd8
- 2.Rc2#
- 2.Rc3#
- 2.Ra4#
- 2.Rb4#
- 2.Rd4#
- 2.Rxe4#
- 2.R4c5#
- 2.R4c6#
- 2.R4c7#
- 2.Qd2#
- 1...Qc5
- 2.R4xc5#
- 1...Qc6
- 2.R4xc6#
- 1...Sb2
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Be2!
- threat
- 1.Bxb7+?
- Keys
- 1.Rc6!
- threat
- 2.Qc4#
- 1...Qxc6+
- 2.Qxc6#
- 1...Be2
- 2.Qxe4#
- 1...Sb2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sa5
- 2.Qb5#
- 1...Sc5
- 2.Rxd6#
- threat
- 1.Rc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- Q(h);CHECK,OGATE,XR(C)::QAB1(B),XQ(h)
- Q(h);N_GUARD,N_SPINS(g)::QAB1(B),XQ(h)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD,N_PINR(C)::S(D)
- S(a);N_GUARD::S(D),XS(a)
- Tries
- Try
- B(F);CHECK,XS(g)
- Refutation
- Q(h);N_PINR(C),XB(F)
- Try
- R(C);N_SPINR(C),XQ(h)
- Threat
- DUALS(7)
- Refutation
- R(i);CHECK,XR(C)
- Try
- R(G);N_SPINR(C),XQ(h)
- Threat
- DUALS(4)
- Refutation
- R(i);P_PINR(C),XR(G)
- Try
- Q(B);CHECK,XS(a)
- Vars
- B(b);XQ(B)::S(D)
- Refutation
- K(d);N_SPINS(g),P_SPINQ(h),S_FLIGHT,XR(C)
- Try
- Q(B);
- Threat
- QAB(B)+R(C),XQ(h)
- Vars
- Q(h);CHECK,OGATE,P_SPINQ(h),XR(C)::QAB1(B),XQ(h)
- Q(h);::QAB(B)+R(C),DCHECK,XQ(h)
- Q(h);N_SPINS(g)::QAB(B)+R(C),XQ(h)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- Refutation
- B(b);
- Try
- Q(B);
- Threat
- QAB(B)+R(C),XQ(h)
- Vars
- Q(h);CHECK,OGATE,P_SPINQ(h),XR(C)::QAB1(B),XQ(h)
- Q(h);::QAB(B)+R(C),DCHECK,XQ(h)
- Q(h);N_SPINS(g)::QAB(B)+R(C),XQ(h)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD,N_PINR(C)::S(D)
- S(a);N_GUARD::S(D),XS(a)
- Refutation
- B(b);
- Try
- Actual
- R(C);N_PINS(g)
- Threat
- QAB1(B)
- Vars
- Q(h);CHECK,OGATE,XR(C)::QAB1(B),XQ(h)
- B(b);N_GUARD::QAB1(B),XP(c)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(g);N_GUARD::QAR2(B)
- S(g);N_PINR(C),SBLOCK::B(F)+R(C),DCHECK,XP(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).