MESON Chess Problem Database
Problem Display
PID: 262738 (2Q5/1R1R4/1p1p4/2N3r1/PqkbB1p1/1pPp4/1PN3K1/8 w - - 0 1)
Chandrasekaran, KR
6th HM., SuperProblem, 2018
#2
10 + 9
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qa3
- 2.Sxa3#
- 1...Qa5
- 2.Sa3#
- 1...Qxc5
- 2.Sa3#
- 1...Qb5
- 2.Sa3#
- 1...Rd5
- 2.Bxd3#
- 1...Be3
- 2.Sxe3#
- 1...Bxc5
- 2.Se3#
- 1...Be5
- 2.Se3#
- 1...Bf6
- 2.Se3#
- 1...Bg7
- 2.Se3#
- 1...Bh8
- 2.Se3#
- 1...bxc5
- 2.Rxb4#
- 1...dxc5
- 2.Rxd4#
- 1...d5
- 2.Bxd3#
- 1...Qa3
- Tries
- 1.Sxb4?
- threat
- 2.Bxd3#
- 1...d2
- 2.Bd3#
- 1...Bxc3!
- threat
- 1.Sxb3+?
- 1...Qc5
- 2.Sd2#
- 1...Rc5
- 2.Sd2#
- 1...Bc5
- 2.Sd2#
- 1...Kxb3!
- 1...Qc5
- 1.Sxd3+?
- 1...Qc5
- 2.Sa3#
- 1...Bc5
- 2.Se3#
- 1...Rc5!
- 1...Qc5
- 1.Sa6+?
- 1...Qc5
- 2.Sa3#
- 1...Bc5
- 2.Se3#
- 1...Rc5!
- 1...Qc5
- 1.Se6+?
- 1...Qc5
- 2.Sa3#
- 1...Bc5
- 2.Se3#
- 1...Rc5!
- 1...Qc5
- 1.Rxd6?
- threat
- 2.Bxd3#
- 2.Rxd4#
- 1...Qxc5
- 2.Sa3#
- 2.Rxd4#
- 1...Qxa4
- 2.Bxd3#
- 1...Rxc5
- 2.Bd5#
- 2.Rxd4#
- 1...Bxc3
- 2.Se3#
- 2.Bxd3#
- 1...Bxc5
- 2.Se3#
- 2.Bxd3#
- 2.Rd4#
- 1...dxc2
- 2.Bd3#
- 2.Rxd4#
- 1...bxc5
- 2.Rxd4#
- 2.Rxb4#
- 1...Rd5
- 2.Bxd3#
- 2.Bxd5#
- 1...Bg1
- 2.Bxd3#
- 1...Bf2
- 2.Bxd3#
- 1...Be3
- 2.Sxe3#
- 2.Bxd3#
- 1...Be5
- 2.Se3#
- 2.Bxd3#
- 2.Bd5#
- 1...Bf6
- 2.Se3#
- 2.Bxd3#
- 1...Bg7
- 2.Se3#
- 2.Bxd3#
- 1...Bh8
- 2.Se3#
- 2.Bxd3#
- 1...d2
- 2.Bd3#
- 2.Rxd4#
- 1...Qxc3!
- threat
- 1.Sxb4?
- Keys
- 1.Qc6!
- threat
- 2.Bxd3#
- 1...Qxc3
- 2.Qb5#
- 1...Qxc5
- 2.Sa3#
- 1...Rxc5
- 2.Bd5#
- 1...Bxc5
- 2.Se3#
- 1...dxc2
- 2.Bd3#
- 1...bxc5
- 2.Rxb4#
- 1...dxc5
- 2.Rxd4#
- 1...d2
- 2.Bd3#
- threat
- 1.Qc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 10
- Sets
- Q(c);N_GUARD::S(B),XQ(c)
- Q(c);N_GUARD::S(B)
- Q(c);N_GUARD,P_SPINQ(c),XS(G)::S(B)
- R(g);SBLOCK::B(F),XP(b)
- B(e);N_GUARD::S(B),XB(e)
- B(e);N_GUARD,P_SPINB(e),XS(G)::S(B)
- B(e);N_GUARD::S(B)
- P(h);OGATE,P_SPINP(h),XS(G)::R1(H),XQ(c)
- P(i);OGATE,P_SPINP(i),XS(G)::R1(I),XB(e)
- P(i);::B(F),XP(b)
- Tries
- Try
- S(B);XQ(c)
- Threat
- B(F),XP(b)
- Vars
- P(b);::B(F)
- Refutation
- B(e);XP(D)
- Try
- S(G);CHECK,XP(a)
- Vars
- Q(c);P_SPINQ(c)::S(G)
- R(g);P_SPINR(g)::S(G)
- B(e);P_SPINB(e)::S(G)
- Refutation
- K(d);S_FLIGHT,XS(G)
- Try
- S(G);CHECK,XP(b)
- Vars
- Q(c);P_SPINQ(c)::S(B)
- B(e);P_SPINB(e)::S(B)
- Refutation
- R(g);P_SPINR(g)
- Try
- S(G);CHECK
- Vars
- Q(c);P_SPINQ(c)::S(B)
- B(e);P_SPINB(e)::S(B)
- Refutation
- R(g);P_SPINR(g)
- Try
- S(G);CHECK
- Vars
- Q(c);P_SPINQ(c)::S(B)
- B(e);P_SPINB(e)::S(B)
- Refutation
- R(g);P_SPINR(g)
- Try
- R(I);XP(i)
- Threat
- DUALS(2)
- Vars
- Q(c);XP(E)::B(F),XP(b)
- B(e);::B(F),XP(b)
- Refutation
- Q(c);XP(D)
- Try
- Actual
- Q(J);
- Threat
- B(F),XP(b)
- Vars
- Q(c);N_GUARD,XP(D)::QAB1(J)
- Q(c);N_GUARD,P_SPINQ(c),XS(G)::S(B)
- R(g);N_GUARD,P_SPINR(g),XS(G)::B(F)
- B(e);N_GUARD,P_SPINB(e),XS(G)::S(B)
- P(b);XS(B)::B(F)
- P(h);OGATE,P_SPINP(h),XS(G)::R1(H),XQ(c)
- P(i);OGATE,P_SPINP(i),XS(G)::R1(I),XB(e)
- P(b);::B(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).