MESON Chess Problem Database
Problem Display
PID: 245751 (1n4b1/1K6/2p5/RNk2qQR/3n3r/Pp1PrB2/4N3/6B1 w - - 0 1)
Wrobel, Marian
Shakhmaty i Shashki, 1930
#2
10 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Qe7#
- 1...Re6
- 2.Qc1#
- 1...Re7+
- 2.Qxe7#
- 1...Be6
- 2.Qe7#
- 1...Sc2
- 2.Qe7#
- 1...Sxe2
- 2.Qe7#
- 1...Sxb5
- 2.Qe7#
- 1...Se6
- 2.Qe7#
- 2.Qxf5#
- 1...Qe5
- Tries
- 1.Sbc3+?
- 1...Sb5
- 2.Qe7#
- 1...Kd6!
- 1...Sb5
- 1.Sa7+?
- 1...Sb5
- 2.Qe7#
- 1...Kd6!
- 1...Sb5
- 1.Sc7+?
- 1...Sb5
- 2.Qe7#
- 1...Kd6!
- 1...Sb5
- 1.Qf6?
- threat
- 2.Sbxd4#
- 2.Qd6#
- 1...Re7+
- 2.Sc7#
- 2.Qxe7#
- 1...Rxd3
- 2.Sd6#
- 1...Sxe2
- 2.Sc3#
- 2.Sd4#
- 2.Sd6#
- 2.Sa7#
- 2.Sc7#
- 2.Qe7#
- 2.Qd6#
- 2.Qf8#
- 1...Sxf3
- 2.Sbc3#
- 2.Sbd4#
- 2.Sd6#
- 2.Sa7#
- 2.Sc7#
- 2.Qd6#
- 1...Sxb5
- 2.Qe7#
- 2.Qf8#
- 1...cxb5
- 2.Qb6#
- 1...Bc4
- 2.Qd6#
- 1...Be6
- 2.Qe7#
- 2.Qf8#
- 1...Sc2
- 2.Sbc3#
- 2.Sbd4#
- 2.Sd6#
- 2.Sa7#
- 2.Sc7#
- 2.Qe7#
- 2.Qd6#
- 2.Qf8#
- 1...Se6
- 2.Rxf5#
- 2.Qe7#
- 2.Qxf5#
- 1...Re6!
- threat
- 1.Qd8?
- threat
- 2.Sbxd4#
- 2.Qb6#
- 2.Qd6#
- 1...Re7+
- 2.Sc7#
- 2.Qxe7#
- 1...Rxd3
- 2.Sd6#
- 1...Rxf3
- 2.Sbc3#
- 2.Sbxd4#
- 2.Sd6#
- 2.Sa7#
- 2.Sc7#
- 2.Qd6#
- 1...Sxe2
- 2.Sc3#
- 2.Sd4#
- 2.Sa7#
- 2.Sc7#
- 2.Qb6#
- 2.Qe7#
- 2.Qd6#
- 2.Qf8#
- 1...Sxf3
- 2.Sbc3#
- 2.Sbd4#
- 2.Sd6#
- 2.Sa7#
- 2.Sc7#
- 2.Qd6#
- 1...Sxb5
- 2.Qe7#
- 2.Qf8#
- 1...cxb5
- 2.Qb6#
- 1...Ree4
- 2.Sbc3#
- 2.Sbxd4#
- 2.Sd6#
- 2.Sa7#
- 2.Sc7#
- 2.Qd6#
- 1...Re6
- 2.Sbc3#
- 2.Sbxd4#
- 2.Sd6#
- 2.Sa7#
- 2.Sc7#
- 2.Qb6#
- 1...Rhe4
- 2.Sbxd4#
- 2.Qd6#
- 1...Bc4
- 2.Qb6#
- 2.Qd6#
- 1...Sc2
- 2.Sbc3#
- 2.Sbd4#
- 2.Sd6#
- 2.Sa7#
- 2.Sc7#
- 2.Qb6#
- 2.Qe7#
- 2.Qd6#
- 2.Qf8#
- 1...Se6
- 2.Sbc3#
- 2.Sbd4#
- 2.Sd6#
- 2.Sa7#
- 2.Sc7#
- 2.Rxf5#
- 2.Qb6#
- 2.Qe7#
- 2.Qd6#
- 1...Sd7!
- threat
- 1.Sbc3+?
- Keys
- 1.Qh6!
- threat
- 2.Sbxd4#
- 2.Qd6#
- 1...Re7+
- 2.Sc7#
- 1...Rxd3
- 2.Sd6#
- 1...Sxe2
- 2.Qf8#
- 2.Qd6#
- 1...Sxf3
- 2.Sbc3#
- 2.Sbd4#
- 2.Sd6#
- 2.Sa7#
- 2.Sc7#
- 2.Qd6#
- 1...Sxb5
- 2.Qf8#
- 1...cxb5
- 2.Qb6#
- 1...Re6
- 2.Qc1#
- 1...Bc4
- 2.Qd6#
- 1...Be6
- 2.Qf8#
- 1...Sc2
- 2.Sbc3#
- 2.Sbd4#
- 2.Sd6#
- 2.Sa7#
- 2.Sc7#
- 2.Qf8#
- 2.Qd6#
- 1...Se6
- 2.Rxf5#
- threat
- 1.Qh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- Q(f);S_CUTR(b)::QAB(H)
- R(b);OGATE,P_SPINS(c)::QAR(H)
- R(b);CHECK,N_GUARD,P_SPINS(c)::QAB(H),XR(b)
- B(i);S_CUTR(b)::QAB(H)
- S(c);P_SPINR(b)::QAB(H)
- S(c);P_SPINR(b),XS(B)::QAB(H)
- S(c);P_SPINR(b),P_SPINS(c),XS(G)::QAB(H)
- Tries
- Try
- S(G);CHECK
- Vars
- S(c);P_SPINR(b),P_SPINS(c)::QAB(H)
- Refutation
- K(e);N_SPINQ(f),S_FLIGHT
- Try
- S(G);CHECK
- Vars
- S(c);P_SPINR(b),P_SPINS(c)::QAB(H)
- Refutation
- K(e);N_SPINQ(f),S_FLIGHT
- Try
- S(G);CHECK
- Vars
- S(c);P_SPINR(b),P_SPINS(c)::QAB(H)
- Refutation
- K(e);N_SPINQ(f),S_FLIGHT
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(b);P_SPINS(c),XP(D)::R(F)+S(G)
- P(g);OGATE,P_SPINP(g),XS(G)::QAB1(H)
- B(i);::QAB1(H)
- Refutation
- R(b);P_SPINS(c)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- R(b);P_SPINS(c),XP(D)::R(F)+S(G)
- P(g);P_SPINP(g),XS(G)::QAB1(H)
- Refutation
- S(h);
- Try
- Actual
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,P_SPINS(c)::R(F)+S(G)
- R(b);P_SPINS(c),XP(D)::R(F)+S(G)
- S(c);P_SPINR(b),P_SPINS(c),XS(G)::QAB(H)
- P(g);OGATE,P_SPINP(g),XS(G)::QAB1(H)
- R(b);OGATE,P_SPINS(c)::QAR(H)
- B(i);::QAB1(H)
- B(i);S_CUTR(b)::QAB(H)
- S(c);N_GUARD,P_SPINR(b),S_CUTB(i)::R(I),XQ(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).