MESON Chess Problem Database
Problem Display
PID: 108702 (8/1p6/pQ6/B7/8/p2P2PK/R4q1p/RB3rkr w - - 0 1)
Kowalski, S
Szachy, 1971
#2
8 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe3
- 2.Rg2#
- 1...Qd4
- 2.Rg2#
- 1...Qc5
- 2.Rg2#
- 1...Qxb6
- 2.Rg2#
- 1...Rxb1
- 2.Rxb1#
- 2.Qxf2#
- 1...Rc1
- 2.Qxf2#
- 1...Rd1
- 2.Qxf2#
- 1...Re1
- 2.Qxf2#
- 1...Qe3
- Tries
- 1.Be1?
- 1...Qxb6
- 2.Rg2#
- 1...Rxe1
- 2.Qxf2#
- 1...Qe3
- 2.Rg2#
- 1...Qd4
- 2.Rg2#
- 1...Qc5
- 2.Rg2#
- 1...a5!
- 1...Qxb6
- 1.Bc3?
- 1...Qxb6
- 2.Rg2#
- 1...Rxb1
- 2.Rxb1#
- 2.Qxf2#
- 1...Rc1
- 2.Qxf2#
- 1...Rd1
- 2.Qxf2#
- 1...Re1
- 2.Qxf2#
- 1...Qe3
- 2.Rg2#
- 1...Qd4
- 2.Rg2#
- 1...Qc5
- 2.Rg2#
- 1...a5!
- 1...Qxb6
- 1.Bb4?
- 1...Qxb6
- 2.Rg2#
- 1...Rxb1
- 2.Rxb1#
- 2.Qxf2#
- 1...Rc1
- 2.Qxf2#
- 1...Rd1
- 2.Qxf2#
- 1...Re1
- 2.Qxf2#
- 1...Qe3
- 2.Rg2#
- 1...Qd4
- 2.Rg2#
- 1...Qc5
- 2.Rg2#
- 1...a5!
- 1...Qxb6
- 1.Rc2?
- 1...Qxb6
- 2.Rg2#
- 1...Rxb1
- 2.Rxb1#
- 2.Qxf2#
- 1...Rc1
- 2.Rxc1#
- 2.Qxf2#
- 1...Rd1
- 2.Qxf2#
- 1...Re1
- 2.Qxf2#
- 1...Qe3
- 2.Rg2#
- 1...Qd4
- 2.Rg2#
- 1...Qc5
- 2.Rg2#
- 1...a2!
- 1...Qxb6
- 1.Rd2?
- 1...Qxb6
- 2.Rg2#
- 1...Rxb1
- 2.Rxb1#
- 2.Qxf2#
- 1...Rc1
- 2.Qxf2#
- 1...Rd1
- 2.Rxd1#
- 2.Qxf2#
- 1...Re1
- 2.Qxf2#
- 1...Qe3
- 2.Rg2#
- 1...Qd4
- 2.Rg2#
- 1...Qc5
- 2.Rg2#
- 1...a2!
- 1...Qxb6
- 1.Re2?
- 1...Qxb6
- 2.Rg2#
- 1...Rxb1
- 2.Rxb1#
- 2.Qxf2#
- 1...Rc1
- 2.Qxf2#
- 1...Rd1
- 2.Qxf2#
- 1...Re1
- 2.Rxe1#
- 2.Qxf2#
- 1...Qe3
- 2.Rg2#
- 1...Qd4
- 2.Rg2#
- 1...Qc5
- 2.Rg2#
- 1...a2!
- 1...Qxb6
- 1.g4?
- 1...Qxb6
- 2.Rg2#
- 1...Rxb1
- 2.Rxb1#
- 2.Qxf2#
- 1...Rc1
- 2.Qxf2#
- 1...Rd1
- 2.Qxf2#
- 1...Re1
- 2.Qxf2#
- 1...Qd4
- 2.Rg2#
- 1...Qc5
- 2.Rg2#
- 1...Qe3+!
- 1...Qxb6
- 1.Be1?
- Keys
- 1.Bc2!
- 1...Qxb6
- 2.Bxb6#
- 1...Rxa1
- 2.Rxa1#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qxd4#
- 1...Qc5
- 2.Qxc5#
- 1...Rb1
- 2.Rxb1#
- 1...Rc1
- 2.Rxc1#
- 1...Rd1
- 2.Rxd1#
- 1...Re1
- 2.Rxe1#
- 1...Qxb6
- 1.Bc2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(d);OGATE,P_PINP(E)::R1(C)
- Q(d);OGATE::R1(C)
- Q(d);N_SPINQ(d),OGATE,XQ(H)::R1(C)
- R(a);N_GUARD::QAB1(H),XQ(d)
- Tries
- Try
- B(G);
- Vars
- Q(d);N_SPINQ(d),OGATE,XQ(H)::R1(C)
- R(a);N_GUARD,XB(G)::QAB1(H),XQ(d)
- Q(d);OGATE,P_PINP(E)::R1(C)
- Q(d);OGATE::R1(C)
- Refutation
- P(g);
- Try
- B(G);
- Vars
- Q(d);N_SPINQ(d),OGATE,XQ(H)::R1(C)
- R(a);N_GUARD::QAB1(H),XQ(d)
- Q(d);OGATE,P_PINP(E)::R1(C)
- Q(d);OGATE::R1(C)
- Refutation
- P(g);
- Try
- B(G);
- Vars
- Q(d);N_SPINQ(d),OGATE,XQ(H)::R1(C)
- R(a);N_GUARD::QAB1(H),XQ(d)
- Q(d);OGATE,P_PINP(E)::R1(C)
- Q(d);OGATE::R1(C)
- Refutation
- P(g);
- Try
- R(C);
- Vars
- Q(d);N_SPINQ(d),OGATE,XQ(H)::R1(C)
- R(a);N_GUARD::QAB1(H),XQ(d)
- Q(d);OGATE,P_PINP(E)::R1(C)
- Q(d);OGATE::R1(C)
- Refutation
- P(f);
- Try
- R(C);
- Vars
- Q(d);N_SPINQ(d),OGATE,XQ(H)::R1(C)
- R(a);N_GUARD::QAB1(H),XQ(d)
- Q(d);OGATE,P_PINP(E)::R1(C)
- Q(d);OGATE::R1(C)
- Refutation
- P(f);
- Try
- R(C);
- Vars
- Q(d);N_SPINQ(d),OGATE,XQ(H)::R1(C)
- R(a);N_GUARD::QAB1(H),XQ(d)
- Q(d);OGATE,P_PINP(E)::R1(C)
- Q(d);OGATE::R1(C)
- Refutation
- P(f);
- Try
- P(E);
- Vars
- Q(d);N_SPINQ(d),OGATE,XQ(H)::R1(C)
- R(a);N_GUARD::QAB1(H),XQ(d)
- Q(d);OGATE::R1(C)
- Refutation
- Q(d);CHECK
- Try
- Actual
- B(B);P_PINR(a)
- Vars
- Q(d);N_SPINQ(d),OGATE,XQ(H)::B(G),XQ(d)
- R(a);N_SPINR(a),OGATE,XR(A)::R(C),XR(a)
- Q(d);OGATEB,P_PINP(E)::QAB(H),XQ(d)
- Q(d);OGATEB::QAB(H),XQ(d)
- R(a);OGATEB::R(A),XR(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).