MESON Chess Problem Database
Problem Display
PID: 164945 (B1n1r3/p2Pp3/pbKPR3/2P2Npb/r2p3p/Rq3kBQ/5p1P/n1N5 w - - 0 1)
Pituk, Alexander
Skakbladet, 1937
#2
12 + 15
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qd3
- 2.Rxd3#
- 1...Rxa3
- 2.Sxd4#
- 1...Ra5
- 2.Sxd4#
- 1...Bxc5
- 2.Kxc5#
- 2.Kc7#
- 1...Bc7
- 2.Kxc7#
- 1...Sxd6
- 2.Bxd6#
- 1...d3
- 2.Re3#
- 1...hxg3
- 2.Qxg3#
- 1...g4
- 2.Sxh4#
- 1...exd6
- 2.Bxd6#
- 1...Qd3
- Tries
- 1.Sxb3?
- threat
- 2.Sd2#
- 2.Sbxd4#
- 1...hxg3
- 2.Qxg3#
- 1...d3
- 2.Sd2#
- 2.Re3#
- 1...Sxb3!
- threat
- 1.Rxb3+?
- 1...d3
- 2.Rxd3#
- 2.Re3#
- 1...Sxb3!
- 1...d3
- 1.Qg2+?
- 1...Kg4
- 2.Sh6#
- 1...Kxg2!
- 1...Kg4
- 1.dxe8Q?
- threat
- 2.Kd7#
- 1...Rxa3
- 2.Sxd4#
- 1...Sxd6
- 2.Bxd6#
- 1...hxg3
- 2.Qxg3#
- 1...exd6
- 2.Bxd6#
- 1...d3
- 2.Re3#
- 1...Bxe8+!
- threat
- 1.dxe8S?
- threat
- 2.Kd7#
- 1...Rxa3
- 2.Sxd4#
- 1...Sxd6
- 2.Bxd6#
- 1...hxg3
- 2.Qxg3#
- 1...exd6
- 2.Bxd6#
- 1...d3
- 2.Re3#
- 1...Bxe8+!
- threat
- 1.dxe8B?
- threat
- 2.Kd7#
- 1...Rxa3
- 2.Sxd4#
- 1...Sxd6
- 2.Bxd6#
- 1...hxg3
- 2.Qxg3#
- 1...exd6
- 2.Bxd6#
- 1...d3
- 2.Re3#
- 1...Bxe8+!
- threat
- 1.dxe8R?
- threat
- 2.Kd7#
- 1...Rxa3
- 2.Sxd4#
- 1...Sxd6
- 2.Bxd6#
- 1...hxg3
- 2.Qxg3#
- 1...exd6
- 2.Bxd6#
- 1...d3
- 2.Re3#
- 1...Bxe8+!
- threat
- 1.d8Q?
- threat
- 2.Kd7#
- 1...Rxa3
- 2.Sxd4#
- 1...Sxd6
- 2.Bxd6#
- 1...hxg3
- 2.Qxg3#
- 1...exd6
- 2.Bxd6#
- 1...d3
- 2.Re3#
- 1...Rxd8!
- threat
- 1.d8S?
- threat
- 2.Kd7#
- 1...Rxa3
- 2.Sxd4#
- 1...Sxd6
- 2.Bxd6#
- 1...hxg3
- 2.Qxg3#
- 1...exd6
- 2.Bxd6#
- 1...d3
- 2.Re3#
- 1...Rxd8!
- threat
- 1.d8B?
- threat
- 2.Kd7#
- 1...Rxa3
- 2.Sxd4#
- 1...Sxd6
- 2.Bxd6#
- 1...hxg3
- 2.Qxg3#
- 1...exd6
- 2.Bxd6#
- 1...d3
- 2.Re3#
- 1...Rxd8!
- threat
- 1.d8R?
- threat
- 2.Kd7#
- 1...Rxa3
- 2.Sxd4#
- 1...Sxd6
- 2.Bxd6#
- 1...hxg3
- 2.Qxg3#
- 1...exd6
- 2.Bxd6#
- 1...d3
- 2.Re3#
- 1...Rxd8!
- threat
- 1.Sxb3?
- Keys
- 1.Kb7!
- threat
- 2.Kb8#
- 1...Ba5+
- 2.Kxa6#
- 1...Bxc5+
- 2.Kc7#
- 1...Bc7+
- 2.Kxc7#
- 1...Bd8+
- 2.Kxc8#
- 1...Sxd6+
- 2.Bxd6#
- 1...Rxa3
- 2.Sxd4#
- 1...hxg3
- 2.Qxg3#
- 1...exd6
- 2.Bxd6#
- 1...d3
- 2.Re3#
- threat
- 1.Kb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- Q(c);OGATE::R(C),XQ(c)
- R(e);N_GUARD,N_SPINQ(c),XR(C)::S(G),XP(f)
- R(e);N_GUARD::S(G),XP(f)
- B(k);::B(L)+K(H),XB(k)
- S(n);OGATE,XP(I)::QAR(E)+B(D),XS(n)
- P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(J)
- P(g);OGATE,P_SPINP(g),XB(D)::QAR1(E),XP(g)
- P(h);N_GUARD::S(G),XP(g)
- P(m);OGATE,XP(I)::QAR(E)+B(D),XP(m)
- Tries
- Try
- S(A);XQ(c)
- Threat
- DUALS(2)
- Vars
- P(g);OGATE,P_SPINP(g),XB(D)::QAR1(E),XP(g)
- Refutation
- S(a);P_SPINS(a),XS(A)
- Try
- R(C);CHECK,XQ(c)
- Refutation
- S(a);XR(C)
- Try
- Q(E);CHECK
- Vars
- K(d);N_SPINQ(c),S_FLIGHT::S(G)
- Refutation
- K(d);N_SPINQ(c),S_FLIGHT,XQ(E)
- Try
- P(K);XR(o)
- Threat
- B(L)+K(H)
- Vars
- R(e);N_GUARD,N_SPINQ(c),XR(C)::S(G),XP(f)
- S(n);OGATE,XP(I)::QAR(E)+B(D),XS(n)
- P(g);OGATE,P_SPINP(g),XB(D)::QAR1(E),XP(g)
- P(m);OGATE,XP(I)::QAR(E)+B(D),XP(m)
- P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(J)
- Refutation
- B(i);CHECK,XQ(K)
- Try
- P(K);XR(o)
- Threat
- B(L)+K(H)
- Vars
- R(e);N_GUARD,N_SPINQ(c),XR(C)::S(G),XP(f)
- S(n);OGATE,XP(I)::QAR(E)+B(D),XS(n)
- P(g);OGATE,P_SPINP(g),XB(D)::QAR1(E),XP(g)
- P(m);OGATE,XP(I)::QAR(E)+B(D),XP(m)
- P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(J)
- Refutation
- B(i);CHECK,XS(K)
- Try
- P(K);XR(o)
- Threat
- B(L)+K(H)
- Vars
- R(e);N_GUARD,N_SPINQ(c),XR(C)::S(G),XP(f)
- S(n);OGATE,XP(I)::QAR(E)+B(D),XS(n)
- P(g);OGATE,P_SPINP(g),XB(D)::QAR1(E),XP(g)
- P(m);OGATE,XP(I)::QAR(E)+B(D),XP(m)
- P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(J)
- Refutation
- B(i);CHECK,XB(K)
- Try
- P(K);XR(o)
- Threat
- B(L)+K(H)
- Vars
- R(e);N_GUARD,N_SPINQ(c),XR(C)::S(G),XP(f)
- S(n);OGATE,XP(I)::QAR(E)+B(D),XS(n)
- P(g);OGATE,P_SPINP(g),XB(D)::QAR1(E),XP(g)
- P(m);OGATE,XP(I)::QAR(E)+B(D),XP(m)
- P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(J)
- Refutation
- B(i);CHECK,XR(K)
- Try
- P(K);
- Threat
- B(L)+K(H)
- Vars
- R(e);N_GUARD,N_SPINQ(c),XR(C)::S(G),XP(f)
- S(n);OGATE,XP(I)::QAR(E)+B(D),XS(n)
- P(g);OGATE,P_SPINP(g),XB(D)::QAR1(E),XP(g)
- P(m);OGATE,XP(I)::QAR(E)+B(D),XP(m)
- P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(J)
- Refutation
- R(o);XQ(K)
- Try
- P(K);
- Threat
- B(L)+K(H)
- Vars
- R(e);N_GUARD,N_SPINQ(c),XR(C)::S(G),XP(f)
- S(n);OGATE,XP(I)::QAR(E)+B(D),XS(n)
- P(g);OGATE,P_SPINP(g),XB(D)::QAR1(E),XP(g)
- P(m);OGATE,XP(I)::QAR(E)+B(D),XP(m)
- P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(J)
- Refutation
- R(o);XS(K)
- Try
- P(K);
- Threat
- B(L)+K(H)
- Vars
- R(e);N_GUARD,N_SPINQ(c),XR(C)::S(G),XP(f)
- S(n);OGATE,XP(I)::QAR(E)+B(D),XS(n)
- P(g);OGATE,P_SPINP(g),XB(D)::QAR1(E),XP(g)
- P(m);OGATE,XP(I)::QAR(E)+B(D),XP(m)
- P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(J)
- Refutation
- R(o);XB(K)
- Try
- P(K);
- Threat
- B(L)+K(H)
- Vars
- R(e);N_GUARD,N_SPINQ(c),XR(C)::S(G),XP(f)
- S(n);OGATE,XP(I)::QAR(E)+B(D),XS(n)
- P(g);OGATE,P_SPINP(g),XB(D)::QAR1(E),XP(g)
- P(m);OGATE,XP(I)::QAR(E)+B(D),XP(m)
- P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(J)
- Refutation
- R(o);XR(K)
- Try
- Actual
- K(H);S_FLIGHT
- Threat
- B(L)+K(H)
- Vars
- B(k);CHECK::B(L)+K(H),XP(j)
- B(k);CHECK,XP(F)::B(L)+K(H)
- B(k);CHECK::B(L)+K(H),XB(k)
- B(k);CHECK::B(L)+K(H),XS(n)
- S(n);CHECK,OGATE,XP(I)::QAR(E)+B(D),XS(n)
- R(e);N_GUARD,N_SPINQ(c),XR(C)::S(G),XP(f)
- P(g);OGATE,P_SPINP(g),XB(D)::QAR1(E),XP(g)
- P(m);OGATE,XP(I)::QAR(E)+B(D),XP(m)
- P(f);N_GUARD,N_SPINQ(c),S_CUTQ(c)::R1(J)
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).