MESON Chess Problem Database
Problem Display
PID: 239255 (8/1p1p2N1/pK1pp3/R2bP3/1p1kp3/1P2R2N/2P5/4Q3 w - - 0 1)
Makaronets, Leonid
Sachove umeni (Ceskoslovensky sach), 1971
#2
9 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kxe5
- 2.Qa1#
- 1...Bxb3
- 2.Rxe4#
- 1...Bc4
- 2.Rxe4#
- 1...Bc6
- 2.Qd2#
- 1...dxe5
- 2.Qd2#
- 1...Kxe5
- Tries
- 1.Sg1?
- 1...Bxb3
- 2.Rxe4#
- 1...dxe5
- 2.Qd2#
- 1...Bc4
- 2.Rxe4#
- 1...Bc6
- 2.Qd2#
- 1...Kxe5!
- 1...Bxb3
- 1.Sf2?
- 1...Bxb3
- 2.Rxe4#
- 1...dxe5
- 2.Qd2#
- 1...Bc4
- 2.Rxe4#
- 1...Bc6
- 2.Qd2#
- 1...Kxe5!
- 1...Bxb3
- 1.Sf4?
- 1...Bxb3
- 2.Rxe4#
- 1...dxe5
- 2.Qd2#
- 1...Bc4
- 2.Rxe4#
- 1...Bc6
- 2.Qd2#
- 1...Kxe5!
- 1...Bxb3
- 1.Sg5?
- 1...Bxb3
- 2.Rxe4#
- 1...dxe5
- 2.Qd2#
- 1...Bc4
- 2.Rxe4#
- 1...Bc6
- 2.Qd2#
- 1...Kxe5!
- 1...Bxb3
- 1.Sh5?
- 1...Bxb3
- 2.Rxe4#
- 1...dxe5
- 2.Qd2#
- 1...Bc4
- 2.Rxe4#
- 1...Bc6
- 2.Qd2#
- 1...Kxe5!
- 1...Bxb3
- 1.Se8?
- 1...Bxb3
- 2.Rxe4#
- 1...dxe5
- 2.Qd2#
- 1...Bc4
- 2.Rxe4#
- 1...Bc6
- 2.Qd2#
- 1...Kxe5!
- 1...Bxb3
- 1.Re2?
- threat
- 2.Qa1#
- 1...Kxe5
- 2.Qa1#
- 1...Bxb3
- 2.Rxe4#
- 1...e3!
- threat
- 1.Rd3+?
- 1...Kxe5
- 2.Qa1#
- 1...exd3!
- 1...Kxe5
- 1.Rg3?
- threat
- 2.Qa1#
- 1...Kxe5
- 2.Qa1#
- 1...e3
- 2.Qxe3#
- 1...Bxb3!
- threat
- 1.Qxb4+?
- 1...Kxe5
- 2.Qc3#
- 1...Bc4
- 2.Qc3#
- 1...Kxe3!
- 1...Kxe5
- 1.Qd1+?
- 1...Kxe5
- 2.Qa1#
- 1...Kxe3!
- 1...Kxe5
- 1.Qg1?
- 1...Kxe5
- 2.Qa1#
- 1...dxe5
- 2.Rd3#
- 1...Bc4
- 2.Rd3#
- 1...Bc6
- 2.Rd3#
- 1...Bxb3!
- 1...Kxe5
- 1.c3+?
- 1...bxc3
- 2.Qxc3#
- 1...Kxe5!
- 1...bxc3
- 1.c4?
- 1...Kxe5
- 2.Qa1#
- 1...dxe5
- 2.Qd2#
- 1...bxc4 ep
- 2.Qxc3#
- 1...Bc6
- 2.Qd2#
- 1...Bxc4!
- 1...Kxe5
- 1.exd6?
- 1...Bxb3
- 2.Rxe4#
- 1...Bc4
- 2.Rxe4#
- 1...Bc6
- 2.Qd2#
- 1...e5
- 2.Sf5#
- 2.Qd2#
- 1...Ke5!
- 1...Bxb3
- 1.Sg1?
- Keys
- 1.Qh4!
- 1...Kxe3
- 2.Qf2#
- 1...Kxe5
- 2.Rxe4#
- 1...Bxb3
- 2.Qxe4#
- 1...dxe5
- 2.Rd3#
- 1...Bc4
- 2.Qxe4#
- 1...Bc6
- 2.Rd3#
- 1...Kxe3
- 1.Qh4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)::QAB(A)
- B(d);N_GUARD,XP(C)::R1(D),XP(c)
- B(d);N_GUARD::R1(D),XP(c)
- B(d);::QAR2(A)
- P(f);SBLOCK,XP(G)::QAR2(A)
- Tries
- Try
- S(E);
- Vars
- B(d);N_GUARD,XP(C)::R1(D),XP(c)
- P(f);SBLOCK,XP(G)::QAR2(A)
- B(d);N_GUARD::R1(D),XP(c)
- B(d);::QAR2(A)
- Refutation
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)
- Try
- S(E);
- Vars
- B(d);N_GUARD,XP(C)::R1(D),XP(c)
- P(f);SBLOCK,XP(G)::QAR2(A)
- B(d);N_GUARD::R1(D),XP(c)
- B(d);::QAR2(A)
- Refutation
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)
- Try
- S(E);
- Vars
- B(d);N_GUARD,XP(C)::R1(D),XP(c)
- P(f);SBLOCK,XP(G)::QAR2(A)
- B(d);N_GUARD::R1(D),XP(c)
- B(d);::QAR2(A)
- Refutation
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)
- Try
- S(E);
- Vars
- B(d);N_GUARD,XP(C)::R1(D),XP(c)
- P(f);SBLOCK,XP(G)::QAR2(A)
- B(d);N_GUARD::R1(D),XP(c)
- B(d);::QAR2(A)
- Refutation
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)
- Try
- S(I);
- Vars
- B(d);N_GUARD,XP(C)::R1(D),XP(c)
- P(f);SBLOCK,XP(G)::QAR2(A)
- B(d);N_GUARD::R1(D),XP(c)
- B(d);::QAR2(A)
- Refutation
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)
- Try
- S(I);
- Vars
- B(d);N_GUARD,XP(C)::R1(D),XP(c)
- P(f);SBLOCK,XP(G)::QAR2(A)
- B(d);N_GUARD::R1(D),XP(c)
- B(d);::QAR2(A)
- Refutation
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)
- Try
- R(D);
- Threat
- QAB(A)
- Vars
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)::QAB(A)
- B(d);N_GUARD,XP(C)::R1(D),XP(c)
- Refutation
- P(c);
- Try
- R(D);CHECK
- Vars
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)::QAB(A)
- Refutation
- P(c);XR(D)
- Try
- R(D);
- Threat
- QAB(A)
- Vars
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)::QAB(A)
- P(c);::QAB1(A),XP(c)
- Refutation
- B(d);XP(C)
- Try
- Q(A);CHECK,XP(a)
- Vars
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)::QAB(A)
- B(d);P_SPINB(d)::QAB1(A)
- Refutation
- K(b);S_FLIGHT,XR(D)
- Try
- Q(A);CHECK
- Vars
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)::QAB(A)
- Refutation
- K(b);S_FLIGHT,XR(D)
- Try
- Q(A);
- Vars
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)::QAB(A)
- P(f);SBLOCK,XP(G)::QAB(A)+R(D),DCHECK
- B(d);::QAB(A)+R(D),DCHECK
- Refutation
- B(d);XP(C)
- Try
- P(B);CHECK
- Vars
- P(a);OGATE,XP(B)::QAB1(A),XP(a)
- Refutation
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)
- Try
- P(B);
- Vars
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT,XP(G)::QAB(A)
- P(f);SBLOCK,XP(G)::QAR2(A)
- P(a);EP,N_GUARD,XP(B)::QAB1(A),XP(a)
- B(d);::QAR2(A)
- Refutation
- B(d);XP(B)
- Try
- P(G);XP(f)
- Vars
- B(d);N_GUARD,XP(C)::R1(D),XP(c)
- B(d);N_GUARD::R1(D),XP(c)
- B(d);::QAR2(A)
- Refutation
- K(b);P_SPINB(d),P_SPINP(c),S_FLIGHT
- Try
- Actual
- Q(A);P_PINP(c)
- Vars
- K(b);N_SPINP(c),OGATEB,S_FLIGHT,XR(D)::QAB1(A)
- K(b);P_SPINB(d),S_FLIGHT,XP(G)::R1(D),XP(c)
- B(d);N_GUARD,XP(C)::QAR1(A),XP(c)
- P(f);SBLOCK,XP(G)::R1(D)
- B(d);N_GUARD::QAR1(A),XP(c)
- B(d);::R1(D)
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).