MESON Chess Problem Database
Problem Display
PID: 166579 (1qR5/n5p1/2b1RBN1/p3p3/r2kB3/5PK1/p7/1nQN4 w - - 0 1)
Mosiashvili, Givi
The Problemist, 2017
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Bxe5#
- 1...Qb3
- 2.Bxe5#
- 1...Qb4
- 2.Bxe5#
- 1...Qb6
- 2.Bxe5#
- 1...Qb7
- 2.Bxe5#
- 1...Qa8
- 2.Bxe5#
- 1...Qxc8
- 2.Bxe5#
- 1...Rc4
- 2.Qe3#
- 1...Bb5
- 2.Qe3#
- 2.Qc5#
- 1...Bd5
- 2.Qe3#
- 2.Qc5#
- 1...Bb7
- 2.Qe3#
- 2.Qc5#
- 1...Bd7
- 2.Qe3#
- 2.Qc5#
- 1...Ba8
- 2.Qe3#
- 2.Qc5#
- 1...Be8
- 2.Qe3#
- 2.Qc5#
- 1...Sd2
- 2.Qc3#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Qb2
- Tries
- 1.Sf4?
- threat
- 2.Se2#
- 1...Bxe4
- 2.Qe3#
- 2.Qc5#
- 1...Rc4
- 2.Qe3#
- 1...Sc3
- 2.Qxc3#
- 1...Qb2
- 2.Bxe5#
- 1...Bb5
- 2.Qe3#
- 2.Qc5#
- 1...Qb5!
- threat
- 1.Se7?
- threat
- 2.Sf5#
- 1...Bxe4
- 2.Qe3#
- 1...Rc4
- 2.Qe3#
- 1...Sc3
- 2.Qxc3#
- 1...g6!
- threat
- 1.Rxe5?
- threat
- 2.Qc5#
- 1...Qxe5+
- 2.Bxe5#
- 1...Bxe4
- 2.Qe3#
- 1...Sc3
- 2.Qxc3#
- 1...Qb4
- 2.Rd5#
- 1...Qb5
- 2.Rd5#
- 1...Qb6
- 2.Rd5#
- 1...Rc4
- 2.Qe3#
- 1...Qd6!
- threat
- 1.Rexc6?
- threat
- 2.Qe3#
- 2.Qc5#
- 1...Qd6
- 2.Rxd6#
- 2.Qe3#
- 1...Qb3
- 2.Bxe5#
- 2.Qc5#
- 1...Qb4
- 2.Bxe5#
- 2.Qe3#
- 1...Qb5
- 2.Qe3#
- 1...Qb6
- 2.Bxe5#
- 2.Qe3#
- 1...Ra3
- 2.Rc4#
- 2.Qc4#
- 2.Qc5#
- 1...Rc4
- 2.Rxc4#
- 2.Qe3#
- 2.Qxc4#
- 1...Sd2
- 2.Qxd2#
- 2.Qc3#
- 2.Qc5#
- 1...Sc3
- 2.Qd2#
- 2.Qe3#
- 2.Qxc3#
- 1...Sxc6!
- threat
- 1.Rd6+?
- 1...Bd5
- 2.Bxe5#
- 2.Rxd5#
- 2.Qe3#
- 2.Qc5#
- 1...Qxd6!
- 1...Bd5
- 1.Rcxc6?
- threat
- 2.Qe3#
- 2.Qc5#
- 1...Qd6
- 2.Rcxd6#
- 2.Rexd6#
- 2.Qe3#
- 1...Qb3
- 2.Bxe5#
- 2.Qc5#
- 1...Qb4
- 2.Bxe5#
- 2.Qe3#
- 1...Qb5
- 2.Qe3#
- 1...Qb6
- 2.Bxe5#
- 2.Red6#
- 2.Qe3#
- 1...Qf8
- 2.Bxe5#
- 2.Qe3#
- 1...Ra3
- 2.Rc4#
- 2.Qc4#
- 2.Qc5#
- 1...Rc4
- 2.Rxc4#
- 2.Qe3#
- 2.Qxc4#
- 1...Sd2
- 2.Qxd2#
- 2.Qc3#
- 2.Qc5#
- 1...Sc3
- 2.Qd2#
- 2.Qe3#
- 2.Qxc3#
- 1...Sxc6!
- threat
- 1.Rd8+?
- 1...Qd6
- 2.Bxe5#
- 1...Qxd8
- 2.Bxe5#
- 1...Bd5
- 2.Rxd5#
- 1...Bd7!
- 1...Qd6
- 1.Sf4?
- Keys
- 1.Sxe5!
- threat
- 2.Qe3#
- 1...Qxe5+
- 2.Bxe5#
- 1...Bxe4
- 2.Qc5#
- 1...Qb3
- 2.Sxc6#
- 1...Ra3
- 2.Qc4#
- 1...Sd2
- 2.Qc3#
- threat
- 1.Sxe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- Q(j);N_GUARD::B(G),XP(f)
- Q(j);N_GUARD,P_PINP(C)::B(G),XP(f)
- Q(j);N_GUARD,XR(I)::B(G),XP(f)
- R(c);SBLOCK::QAB1(A)
- S(a);N_GUARD::QAB1(A)
- S(a);N_GUARD::QAB1(A),XS(a)
- Tries
- Try
- S(H);
- Threat
- S(H)
- Vars
- R(c);SBLOCK::QAB1(A)
- S(a);N_GUARD::QAB1(A),XS(a)
- Q(j);N_GUARD::B(G),XP(f)
- Refutation
- Q(j);
- Try
- S(H);
- Threat
- S(H)
- Vars
- B(g);XB(E)::QAB1(A)
- R(c);SBLOCK::QAB1(A)
- S(a);N_GUARD::QAB1(A),XS(a)
- Refutation
- P(i);
- Try
- R(F);P_SPINR(F),XP(f)
- Threat
- QAB1(A)
- Vars
- Q(j);CHECK,OGATE,P_SPINQ(j),XR(F)::B(G),XQ(j)
- B(g);XB(E)::QAB1(A)
- S(a);N_GUARD::QAB1(A),XS(a)
- Q(j);N_PINR(F)::B(G)+R(F),DCHECK
- R(c);SBLOCK::QAB1(A)
- Refutation
- Q(j);
- Try
- R(F);XB(g)
- Threat
- DUALS(2)
- Vars
- Q(j);::QAB1(A)
- Refutation
- S(h);XR(F)
- Try
- R(F);CHECK
- Refutation
- Q(j);XR(F)
- Try
- R(I);XB(g)
- Threat
- DUALS(2)
- Vars
- Q(j);::QAB1(A)
- Refutation
- S(h);XR(I)
- Try
- R(I);CHECK
- Vars
- Q(j);P_SPINQ(j)::B(G),XP(f)
- Q(j);XR(I)::B(G),XP(f)
- B(g);N_GUARD,P_SPINB(g)::R1(I),XB(g)
- Refutation
- B(g);P_SPINB(g)
- Try
- Actual
- S(H);P_SPINS(H),XP(f)
- Threat
- QAB1(A)
- Vars
- Q(j);CHECK,OGATE,P_SPINQ(j),XS(H)::B(G),XQ(j)
- B(g);XB(E)::QAB1(A)
- Q(j);N_PINS(H),P_PINP(C)::B(G)+S(H),DCHECK,XB(g)
- R(c);N_GUARD,P_PINP(C)::QAR1(A)
- S(a);N_GUARD::QAB1(A)
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).