MESON Chess Problem Database
Problem Display
PID: 235234 (1n1r4/1Kp2B2/5N2/BpQ5/N1R1R3/P2k4/5pn1/b5qb w - - 0 1)
Heyl, Peter
Schach, 2007
#2
9 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bb2
- 2.Sxb2#
- 1...Se1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf4
- 2.Qe3#
- 1...Sh4
- 2.Qe3#
- 1...bxc4
- 2.Qxc4#
- 1...Bb2
- Tries
- 1.Rc1?
- threat
- 2.Qc2#
- 2.Qxb5#
- 1...Bxf6
- 2.Qc2#
- 1...bxa4
- 2.Bc4#
- 2.Qc2#
- 2.Qc4#
- 2.Qb5#
- 1...Bc3
- 2.Qxc3#
- 1...Se3
- 2.Qxe3#
- 1...b4
- 2.Qc2#
- 1...Qd1
- 2.Rxd1#
- 2.Qxb5#
- 1...Rd4
- 2.Qc2#
- 1...Rd5
- 2.Qc2#
- 1...Se1
- 2.Rd1#
- 2.Qe3#
- 2.Qxb5#
- 1...c6
- 2.Qc2#
- 1...Qxc1!
- threat
- 1.Rc3+?
- 1...Bxc3
- 2.Qxc3#
- 1...Kd2!
- 1...Bxc3
- 1.Qxf2?
- threat
- 2.Sc5#
- 2.Qc2#
- 2.Qd2#
- 2.Qe2#
- 1...bxa4
- 2.Qc2#
- 2.Qd2#
- 2.Qe2#
- 1...bxc4
- 2.Sc5#
- 2.Bxc4#
- 2.Qd2#
- 2.Qe2#
- 1...Qb1
- 2.Sc5#
- 2.Qd2#
- 2.Qe2#
- 1...Qc1
- 2.Sc5#
- 2.Qe2#
- 1...Qd1
- 2.Sc5#
- 1...Qe1
- 2.Sc5#
- 2.Qc2#
- 1...Qf1
- 2.Sc5#
- 2.Qxf1#
- 2.Qc2#
- 2.Qd2#
- 1...Rd5
- 2.Qc2#
- 2.Qd2#
- 2.Qe2#
- 1...Bc3
- 2.Sc5#
- 2.Rxc3#
- 2.Qe2#
- 1...Bd4
- 2.Qc2#
- 2.Qd2#
- 2.Qe2#
- 1...Se1
- 2.Sc5#
- 2.Qd2#
- 2.Qe2#
- 1...Se3
- 2.Sc5#
- 2.Qd2#
- 1...Sf4
- 2.Sc5#
- 2.Qc2#
- 2.Qd2#
- 1...Sa6
- 2.Qc2#
- 2.Qd2#
- 2.Qe2#
- 1...Sd7
- 2.Qc2#
- 2.Qd2#
- 2.Qe2#
- 1...b4
- 2.Sc5#
- 2.Qc2#
- 2.Qe2#
- 1...c5
- 2.Sxc5#
- 2.Qc2#
- 2.Qd2#
- 2.Qe2#
- 1...Qxf2!
- threat
- 1.Qd4+?
- 1...Rxd4
- 2.Sc5#
- 1...Bxd4!
- 1...Rxd4
- 1.Qd6+?
- 1...Rxd6
- 2.Sc5#
- 1...Bd4
- 2.Sb2#
- 2.Sc5#
- 1...cxd6!
- 1...Rxd6
- 1.Qd5+?
- 1...Bd4
- 2.Sb2#
- 2.Sc5#
- 1...Rxd5!
- 1...Bd4
- 1.Qg5?
- threat
- 2.Sc5#
- 2.Qd2#
- 1...bxa4
- 2.Qd2#
- 1...bxc4
- 2.Qd2#
- 1...Bc3
- 2.Rxc3#
- 1...Se3
- 2.Qxe3#
- 1...f1Q
- 2.Qd2#
- 1...f1B
- 2.Qd2#
- 1...f1R
- 2.Qd2#
- 1...Qc1
- 2.Sc5#
- 1...Qd1
- 2.Sc5#
- 1...Qe1
- 2.Sc5#
- 1...Rd5
- 2.Qd2#
- 1...Bd4
- 2.Qd2#
- 1...Sf4
- 2.Sc5#
- 1...Sa6
- 2.Qd2#
- 1...Sd7
- 2.Qd2#
- 1...b4
- 2.Sc5#
- 1...c5
- 2.Sxc5#
- 2.Qd2#
- 1...f1S!
- threat
- 1.Qh5?
- threat
- 2.Sc5#
- 2.Qe2#
- 1...bxa4
- 2.Qe2#
- 1...bxc4
- 2.Qe2#
- 1...Bc3
- 2.Qe2#
- 1...b4
- 2.Qe2#
- 1...f1S
- 2.Qe2#
- 1...f1B
- 2.Qd1#
- 1...f1R
- 2.Qe2#
- 1...Qd1
- 2.Sc5#
- 2.Qxd1#
- 1...Qe1
- 2.Sc5#
- 1...Qf1
- 2.Sc5#
- 1...Rd5
- 2.Qe2#
- 1...Bd4
- 2.Qe2#
- 1...Se3
- 2.Sc5#
- 1...Sf4
- 2.Sc5#
- 1...Sa6
- 2.Qe2#
- 1...Sd7
- 2.Qe2#
- 1...c5
- 2.Sxc5#
- 2.Qe2#
- 1...f1Q!
- threat
- 1.Rc1?
- Keys
- 1.Qb4!
- threat
- 2.Sc5#
- 2.Qd2#
- 1...bxa4
- 2.Qd2#
- 1...bxc4
- 2.Qd2#
- 2.Qxc4#
- 1...Bc3
- 2.Qxc3#
- 1...Se3
- 2.Qd2#
- 1...f1Q
- 2.Qd2#
- 1...f1S
- 2.Qb1#
- 1...f1B
- 2.Qd2#
- 2.Qb1#
- 1...f1R
- 2.Qd2#
- 1...Qc1
- 2.Sc5#
- 1...Qd1
- 2.Sc5#
- 1...Qe1
- 2.Sc5#
- 1...Rd5
- 2.Qd2#
- 1...Bd4
- 2.Qd2#
- 1...Sa6
- 2.Qd2#
- 1...Sd7
- 2.Qd2#
- 1...c5
- 2.Sxc5#
- 2.Qd2#
- threat
- 1.Qb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 12
- REMOVED MATES = 5
- Sets
- B(a);N_GUARD::S(B),XB(a)
- S(e);N_GUARD,P_PINR(D)::QAR1(F)
- S(e);N_GUARD,P_PINR(D)::QAR1(F),XS(e)
- P(g);OGATE,XR(C)::QAB1(F),XP(g)
- Tries
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- B(a);XS(G)::QAB1(F)
- B(a);N_GUARD::QAR1(F),XB(a)
- S(e);N_GUARD,P_PINR(D)::QAR1(F),XS(e)
- P(g);::QAB1(F)
- R(j);::QAB1(F)
- P(h);::QAB1(F)
- Refutation
- Q(b);XR(C)
- Try
- R(C);CHECK
- Vars
- B(a);OGATE,XR(C)::QAR1(F),XB(a)
- Refutation
- K(f);P-FLIGHT
- Try
- Q(F);XP(d)
- Threat
- DUALS(4)
- Vars
- Q(b);::S(B)
- Refutation
- Q(b);XQ(F)
- Try
- Q(F);CHECK
- Vars
- R(j);XQ(F)::S(B)
- Refutation
- B(a);XQ(F)
- Try
- Q(F);CHECK
- Vars
- R(j);XQ(F)::S(B)
- Refutation
- P(h);XQ(F)
- Try
- Q(F);CHECK
- Refutation
- R(j);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- P(g);XS(B)::QAR1(F)
- P(g);XR(C)::QAR1(F)
- B(a);N_GUARD::R1(C),XB(a)
- S(e);N_GUARD,P_PINR(D)::QAR1(F),XS(e)
- P(d);::QAR1(F)
- Q(b);::S(B)
- R(j);::QAR1(F)
- B(a);::QAR1(F)
- S(e);P_PINR(D)::S(B)
- S(i);::QAR1(F)
- P(g);::S(B)
- Refutation
- P(d);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- P(g);XS(B)::QAB1(F)
- P(g);XR(C)::QAB1(F)
- B(a);::QAB1(F)
- P(g);::QAB1(F)
- P(d);::QAB1(F)
- P(d);S_CUTQ(b)::QAR2(F)
- Q(b);::S(B)
- R(j);::QAB1(F)
- S(e);P_PINR(D)::S(B)
- S(i);::QAB1(F)
- Refutation
- P(d);
- Try
- Actual
- Q(F);
- Threat
- DUALS(2)
- Vars
- P(g);XS(B)::QAR1(F)
- B(a);N_GUARD::QAR1(F),XB(a)
- S(e);P_PINR(D)::QAR1(F)
- P(d);::QAR1(F)
- P(d);S_CUTQ(b)::QAB(F)
- Q(b);::S(B)
- R(j);::QAR1(F)
- B(a);::QAR1(F)
- S(i);::QAR1(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).