MESON Chess Problem Database
Problem Display
PID: 70878 (4Q3/2b5/2P3nq/1N1b4/KBkPp3/pR3N2/4Pp2/r1r5 w - - 0 1)
Popov, Grigory Leontievich
Il Due Mosse, 1961
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Qd2
- 2.Sxd2#
- 1...Qg7
- 2.Sd2#
- 1...Qf8
- 2.Sd2#
- 1...Qh1
- 2.Sd2#
- 1...Qh2
- 2.Sd2#
- 1...Qh3
- 2.Sd2#
- 1...Qh4
- 2.Sd2#
- 1...Qh5
- 2.Sd2#
- 1...Qh7
- 2.Sd2#
- 1...Qh8
- 2.Sd2#
- 1...Rab1
- 2.Sxa3#
- 1...Rcb1
- 2.Rc3#
- 1...Rd1
- 2.Rc3#
- 1...Re1
- 2.Rc3#
- 1...Rf1
- 2.Rc3#
- 1...Rg1
- 2.Rc3#
- 1...Rh1
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...Bxc6
- 2.Qxc6#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Qxf7#
- 1...Bg8
- 2.Qxg8#
- 1...Ba5
- 2.Sd6#
- 1...Bb6
- 2.Sd6#
- 1...Bd6
- 2.Sxd6#
- 1...Bd8
- 2.Sd6#
- 1...Sf4
- 2.Sd2#
- 1...a2
- 2.Sa3#
- 1...Qd2
- Tries
- 1.Bd2?
- threat
- 2.Rb4#
- 1...Qxd2
- 2.Sxd2#
- 1...Bxc6
- 2.Qxc6#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Qxf7#
- 1...Bg8
- 2.Qxg8#
- 1...Rab1
- 2.Sxa3#
- 1...Rcb1
- 2.Rc3#
- 1...Ba5
- 2.Sd6#
- 1...Bd6
- 2.Sxd6#
- 1...Qf8!
- threat
- 1.Bxa3?
- threat
- 2.Rb4#
- 1...Rxa3+
- 2.Sxa3#
- 1...Bxc6
- 2.Qxc6#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Qxf7#
- 1...Bg8
- 2.Qxg8#
- 1...Qd2
- 2.Sxd2#
- 1...Qf8
- 2.Sd2#
- 1...Rcb1
- 2.Rc3#
- 1...Ba5
- 2.Sd6#
- 1...Bd6
- 2.Sxd6#
- 1...Rab1!
- threat
- 1.Bc3?
- threat
- 2.Rb4#
- 1...Bxc6
- 2.Qxc6#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Qxf7#
- 1...Bg8
- 2.Qxg8#
- 1...Qf8
- 2.Sd2#
- 1...Rab1
- 2.Sxa3#
- 1...Ba5
- 2.Sd6#
- 1...Bd6
- 2.Sxd6#
- 1...Rcb1!
- threat
- 1.Bc5?
- threat
- 2.Rb4#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Qxf7#
- 1...Bg8
- 2.Qxg8#
- 1...Qd2
- 2.Sxd2#
- 1...Rab1
- 2.Sxa3#
- 1...Rcb1
- 2.Rc3#
- 1...Ba5
- 2.Sd6#
- 1...Bxc6!
- threat
- 1.Bd6?
- threat
- 2.Rb4#
- 1...Bxc6
- 2.Qxc6#
- 1...Bxd6
- 2.Sxd6#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Qxf7#
- 1...Bg8
- 2.Qxg8#
- 1...Qd2
- 2.Sxd2#
- 1...Rab1
- 2.Sxa3#
- 1...Rcb1
- 2.Rc3#
- 1...Ba5!
- threat
- 1.Be7?
- threat
- 2.Rb4#
- 1...Bxc6
- 2.Qxc6#
- 1...Bf7
- 2.Qxf7#
- 1...Bg8
- 2.Qxg8#
- 1...Qd2
- 2.Sxd2#
- 1...Rab1
- 2.Sxa3#
- 1...Rcb1
- 2.Rc3#
- 1...Ba5
- 2.Sd6#
- 1...Bd6
- 2.Sxd6#
- 1...Be6!
- threat
- 1.Bf8?
- threat
- 2.Rb4#
- 1...Qxf8
- 2.Sd2#
- 1...Bxc6
- 2.Qxc6#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Qxf7#
- 1...Qd2
- 2.Sxd2#
- 1...Rab1
- 2.Sxa3#
- 1...Rcb1
- 2.Rc3#
- 1...Ba5
- 2.Sd6#
- 1...Bd6
- 2.Sxd6#
- 1...Bg8!
- threat
- 1.Qe7?
- threat
- 2.Qc5#
- 1...Qf8
- 2.Sd2#
- 1...Bb6
- 2.Sd6#
- 1...Bd6
- 2.Sxd6#
- 1...Sxe7!
- threat
- 1.Bd2?
- Keys
- 1.Ba5!
- threat
- 2.Rb4#
- 1...Bxc6
- 2.Qxc6#
- 1...Bxa5
- 2.Sd6#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Qxf7#
- 1...Bg8
- 2.Qxg8#
- 1...Qd2
- 2.Sxd2#
- 1...Qf8
- 2.Sd2#
- 1...Rab1
- 2.Sxa3#
- 1...Rcb1
- 2.Rc3#
- 1...Bd6
- 2.Sxd6#
- threat
- 1.Ba5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 18
- Sets
- Q(i);N_GUARD::S(C),XQ(i)
- Q(i);N_GUARD::S(C)
- R(a);N_GUARD::S(G),XP(d)
- R(b);N_GUARD::R1(B)
- R(b);N_GUARD::R1(B),XR(b)
- B(g);OGATE,P_PINS(G),XP(H)::QAR2(I),XB(g)
- B(g);OGATEB::QAB(I),XB(g)
- B(j);N_GUARD::S(G)
- B(j);N_GUARD::S(G),XB(j)
- S(h);S_CUTQ(i)::S(C)
- P(d);S_CUTR(a)::S(G)
- Tries
- Try
- B(E);
- Threat
- R1(B)
- Vars
- Q(i);XB(E)::S(C),XQ(i)
- B(g);OGATE,P_PINS(G),XP(H)::QAR2(I),XB(g)
- B(g);OGATEB::QAB(I),XB(g)
- R(a);N_GUARD::S(G),XP(d)
- R(b);N_GUARD::R1(B)
- B(j);N_GUARD::S(G)
- B(j);N_GUARD::S(G),XB(j)
- Refutation
- Q(i);
- Try
- B(E);P_SPINB(E),XP(d)
- Threat
- R1(B)
- Vars
- R(a);CHECK,XB(E)::S(G),XR(a)
- B(g);OGATE,P_PINS(G),XP(H)::QAR2(I),XB(g)
- B(g);OGATEB::QAB(I),XB(g)
- Q(i);N_GUARD::S(C),XQ(i)
- Q(i);N_GUARD::S(C)
- R(b);N_GUARD::R1(B)
- B(j);N_GUARD::S(G)
- B(j);N_GUARD::S(G),XB(j)
- Refutation
- R(a);N_PINB(E)
- Try
- B(E);
- Threat
- R1(B)
- Vars
- B(g);OGATE,P_PINS(G),XP(H)::QAR2(I),XB(g)
- B(g);OGATEB::QAB(I),XB(g)
- Q(i);N_GUARD::S(C)
- R(a);N_GUARD::S(G),XP(d)
- B(j);N_GUARD::S(G)
- B(j);N_GUARD::S(G),XB(j)
- Refutation
- R(b);
- Try
- B(E);
- Threat
- R1(B)
- Vars
- B(g);OGATEB::QAB(I),XB(g)
- Q(i);N_GUARD::S(C),XQ(i)
- R(a);N_GUARD::S(G),XP(d)
- R(b);N_GUARD::R1(B)
- B(j);N_GUARD::S(G)
- Refutation
- B(g);P_PINS(G),XP(H)
- Try
- B(E);
- Threat
- R1(B)
- Vars
- B(g);OGATE,P_PINS(G),XP(H)::QAR2(I),XB(g)
- B(j);XB(E)::S(G),XB(j)
- B(g);OGATEB::QAB(I),XB(g)
- Q(i);N_GUARD::S(C),XQ(i)
- R(a);N_GUARD::S(G),XP(d)
- R(b);N_GUARD::R1(B)
- Refutation
- B(j);
- Try
- B(E);
- Threat
- R1(B)
- Vars
- B(g);OGATE,P_PINS(G),XP(H)::QAR2(I),XB(g)
- B(g);OGATEB::QAB(I),XB(g)
- Q(i);N_GUARD::S(C),XQ(i)
- R(a);N_GUARD::S(G),XP(d)
- R(b);N_GUARD::R1(B)
- B(j);N_GUARD::S(G)
- B(j);N_GUARD::S(G),XB(j)
- Refutation
- B(g);
- Try
- B(E);
- Threat
- R1(B)
- Vars
- Q(i);N_GUARD,XB(E)::S(C)
- B(g);OGATE,P_PINS(G),XP(H)::QAR2(I),XB(g)
- B(g);OGATEB::QAB(I),XB(g)
- Q(i);N_GUARD::S(C),XQ(i)
- R(a);N_GUARD::S(G),XP(d)
- R(b);N_GUARD::R1(B)
- B(j);N_GUARD::S(G)
- B(j);N_GUARD::S(G),XB(j)
- Refutation
- B(g);
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- Q(i);N_GUARD::S(C)
- B(j);N_GUARD::S(G)
- B(j);N_GUARD::S(G),XB(j)
- Refutation
- S(h);XQ(I)
- Try
- Actual
- B(E);
- Threat
- R1(B)
- Vars
- B(g);OGATE,P_PINS(G),XP(H)::QAR2(I),XB(g)
- B(j);N_GUARD,XB(E)::S(G)
- B(g);OGATEB::QAB(I),XB(g)
- Q(i);N_GUARD::S(C),XQ(i)
- Q(i);N_GUARD::S(C)
- R(a);N_GUARD::S(G),XP(d)
- R(b);N_GUARD::R1(B)
- B(j);N_GUARD::S(G),XB(j)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).