MESON Chess Problem Database
Problem Display
PID: 187428 (8/1r4b1/p3RPp1/Pk3qQ1/1NpP4/KN6/1R1BB2r/7b w - - 0 1)
Burger, Robert Eugene
49/51 Place, 10. WCCT, 2016-2017
#2
11 + 9
| 145 | StrateGems | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qc5
- 2.Qxc5#
- 1...Rb6
- 2.Rxb6#
- 1...Ra7
- 2.Rb6#
- 1...Rc7
- 2.Rb6#
- 1...Rd7
- 2.Rb6#
- 1...Re7
- 2.Rb6#
- 1...Rf7
- 2.Rb6#
- 1...Qc5
- Tries
- 1.Sa1?
- threat
- 2.Sa2#
- 2.Sbc2#
- 2.Sd3#
- 2.Sd5#
- 2.Sxa6#
- 2.Sc6#
- 1...Rh3+
- 2.Sd3#
- 1...Kxa5
- 2.Sc6#
- 1...Qc5
- 2.Qxc5#
- 1...Qd5
- 2.Sa2#
- 2.Sbc2#
- 2.Sd3#
- 2.Sxd5#
- 2.Sxa6#
- 2.Sc6#
- 1...Rb6
- 2.Sa2#
- 2.Sbc2#
- 2.Sd3#
- 2.Sd5#
- 2.Sc6#
- 1...Bd5
- 2.Sa2#
- 2.Sbc2#
- 2.Sd3#
- 2.Sxd5#
- 2.Sxa6#
- 2.Sc6#
- 1...Bc6
- 2.Sa2#
- 2.Sbc2#
- 2.Sd3#
- 2.Sd5#
- 2.Sxc6#
- 1...Bf8!
- threat
- 1.Sc1?
- threat
- 2.Sba2#
- 2.Sc2#
- 2.Sbd3#
- 2.Sd5#
- 2.Sxa6#
- 2.Sc6#
- 1...Rh3+
- 2.Sbd3#
- 1...Kxa5
- 2.Sc6#
- 1...Qc5
- 2.Qxc5#
- 1...Qd5
- 2.Sba2#
- 2.Sc2#
- 2.Sbd3#
- 2.Sxd5#
- 2.Sxa6#
- 2.Sc6#
- 1...Rb6
- 2.Sba2#
- 2.Sc2#
- 2.Sbd3#
- 2.Sd5#
- 2.Sc6#
- 1...Bd5
- 2.Sba2#
- 2.Sc2#
- 2.Sbd3#
- 2.Sxd5#
- 2.Sxa6#
- 2.Sc6#
- 1...Bc6
- 2.Sba2#
- 2.Sc2#
- 2.Sbd3#
- 2.Sd5#
- 2.Sxc6#
- 1...Bf8!
- threat
- 1.Sc5?
- threat
- 2.Sa2#
- 2.Sc2#
- 2.Sbd3#
- 2.Sd5#
- 2.Sbxa6#
- 2.Sc6#
- 1...Qd3+
- 2.Sbxd3#
- 1...Qh3+
- 2.Sbd3#
- 1...Qf3+
- 2.Sbd3#
- 1...Rh3+
- 2.Sbd3#
- 1...Kxa5
- 2.Sc6#
- 1...Qxc5
- 2.Qxc5#
- 1...Qb1
- 2.Se4#
- 1...Qc2
- 2.Sxc2#
- 2.Se4#
- 1...Qd5
- 2.Sa2#
- 2.Sc2#
- 2.Sbd3#
- 2.Sxd5#
- 2.Sbxa6#
- 2.Sc6#
- 1...Bd5
- 2.Sa2#
- 2.Sc2#
- 2.Sbd3#
- 2.Sxd5#
- 2.Sbxa6#
- 2.Sc6#
- 1...Bc6
- 2.Sa2#
- 2.Sc2#
- 2.Sbd3#
- 2.Sd5#
- 2.Sbxa6#
- 2.Sxc6#
- 1...Qxe6!
- threat
- 1.Sa2?
- threat
- 2.Sc3#
- 2.Sa1#
- 2.Sbc1#
- 2.Sc5#
- 1...Qc5+
- 2.Sxc5#
- 2.Qxc5#
- 1...Bf8+
- 2.Sc5#
- 1...Rh3!
- threat
- 1.Sc2?
- threat
- 2.Sba1#
- 2.Sc1#
- 2.Sc5#
- 1...Qc5+
- 2.Sxc5#
- 2.Qxc5#
- 1...Bf8+
- 2.Sc5#
- 1...Rh3!
- threat
- 1.Sxa6?
- threat
- 2.Sa1#
- 2.Sc1#
- 2.Sbc5#
- 1...Qc5+
- 2.Sbxc5#
- 2.Qxc5#
- 1...Bf8+
- 2.Sbc5#
- 1...Rb6
- 2.Sbc5#
- 2.Sc7#
- 2.Rxb6#
- 1...Bc6
- 2.Sbc5#
- 1...Rh3!
- threat
- 1.Sc6?
- threat
- 2.Sa1#
- 2.Sc1#
- 2.Sc5#
- 1...Qc5+
- 2.Sxc5#
- 2.Qxc5#
- 1...Bf8+
- 2.Sc5#
- 1...Rh3!
- threat
- 1.Qxf5+?
- 1...Bd5
- 2.Qxd5#
- 1...gxf5!
- 1...Bd5
- 1.Sa1?
- Keys
- 1.Sd3!
- threat
- 2.Sa1#
- 2.Sbc1#
- 2.Sbc5#
- 1...Qc5+
- 2.Sbxc5#
- 2.Qxc5#
- 1...Bf8+
- 2.Sbc5#
- 1...cxb3
- 2.Sf2#
- 1...cxd3
- 2.Bxd3#
- 1...c3
- 2.Sf2#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- Q(e);OGATE,P_PINS(F)::QAR1(I),XQ(e)
- R(h);N_GUARD::R1(J),XR(h)
- R(h);N_GUARD::R1(J)
- Tries
- Try
- S(E);
- Threat
- DUALS(6)
- Vars
- R(b);CHECK::R(A)+S(F)
- K(d);N_SPINP(c),P-FLIGHT,XP(H)::B(B)+S(F),DCHECK
- Q(e);OGATE,P_PINS(F)::QAR1(I),XQ(e)
- Refutation
- B(i);P_PINS(F)
- Try
- S(E);
- Threat
- DUALS(6)
- Vars
- R(b);CHECK::R(A)+S(F)
- K(d);N_SPINP(c),P-FLIGHT,XP(H)::B(B)+S(F),DCHECK
- Q(e);OGATE,P_PINS(F)::QAR1(I),XQ(e)
- Refutation
- B(i);P_PINS(F)
- Try
- S(E);N_PINQ(e)
- Threat
- DUALS(6)
- Vars
- Q(e);CHECK,N_SPINP(c)::R(A)+S(F),XQ(e)
- Q(e);CHECK::R(A)+S(F)
- R(b);CHECK::R(A)+S(F)
- K(d);N_SPINP(c),P-FLIGHT,XP(H)::B(B)+S(F),DCHECK
- Q(e);OGATE,P_PINS(F),P_SPINQ(e),XS(E)::QAR1(I),XQ(e)
- Q(e);::QAR(I)+S(E)
- Refutation
- Q(e);XR(J)
- Try
- S(F);
- Threat
- DUALS(4)
- Vars
- B(i);CHECK::R(A)+S(E)
- Refutation
- R(b);P_PINS(E)
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- B(i);CHECK::R(A)+S(E)
- Refutation
- R(b);P_PINS(E)
- Try
- S(F);XP(f)
- Threat
- DUALS(3)
- Vars
- B(i);CHECK::R(A)+S(E)
- B(a);::R(A)+S(E)
- Refutation
- R(b);P_PINS(E)
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- B(i);CHECK::R(A)+S(E)
- Refutation
- R(b);P_PINS(E)
- Try
- Q(I);CHECK,XQ(e)
- Vars
- B(a);N_GUARD,P_SPINB(a)::QAR2(I),XB(a)
- Refutation
- P(g);XQ(I)
- Try
- Actual
- S(F);N_PINP(c)
- Threat
- DUALS(3)
- Vars
- B(i);CHECK::R(A)+S(E)
- P(c);P_SPINP(c),XS(E)::B(C)+S(F)
- P(c);OGATE,P_SPINP(c),XS(F)::B(C),XP(c)
- P(c);::B(C)+S(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).