MESON Chess Problem Database
Problem Display
PID: 64935 (1NnN3n/2P1p2r/1P1k1b1R/1p3rp1/1P2B1bp/2QPR1q1/1K3p1B/8 w - - 0 1)
Ellerman, Arnoldo
2nd Prize, Good Companions (February), 1922
#2
12 + 13
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Qd4#
- 1...Rf3
- 2.Qd4#
- 1...Rf4
- 2.Qd4#
- 1...Rc5
- 2.bxc5#
- 1...Re5
- 2.Qc6#
- 1...e5
- 2.Qc5#
- 1...Qe5
- Tries
- 1.Bxg3+?
- 1...Rf4
- 2.Qd4#
- 1...Re5
- 2.Bxe5#
- 2.Qd4#
- 2.Qxe5#
- 2.Qc5#
- 2.Qc6#
- 1...e5
- 2.Qc5#
- 1...hxg3!
- 1...Rf4
- 1.Bh1?
- threat
- 2.Sb7#
- 2.Re6#
- 1...Rf3
- 2.Qd4#
- 1...e5
- 2.Qc5#
- 1...e6
- 2.Rxe6#
- 1...Qe5
- 2.Qd4#
- 1...Rf4
- 2.Sb7#
- 2.Qe5#
- 1...Rc5
- 2.Sb7#
- 2.bxc5#
- 1...Rd5
- 2.Sb7#
- 1...Re5
- 2.Qc6#
- 1...Bf3!
- threat
- 1.Bg2?
- threat
- 2.Sb7#
- 2.Re6#
- 1...Rf3
- 2.Qd4#
- 1...e5
- 2.Qc5#
- 1...e6
- 2.Rxe6#
- 1...Qe5
- 2.Qd4#
- 1...Rf4
- 2.Sb7#
- 2.Qe5#
- 1...Rc5
- 2.Sb7#
- 2.bxc5#
- 1...Rd5
- 2.Sb7#
- 1...Re5
- 2.Qc6#
- 1...Bf3!
- threat
- 1.Bf3?
- threat
- 2.Sb7#
- 2.Re6#
- 1...Rxf3
- 2.Qd4#
- 1...e5
- 2.Qc5#
- 1...e6
- 2.Rxe6#
- 1...Qe5
- 2.Qd4#
- 1...Rf4
- 2.Sb7#
- 2.Qe5#
- 1...Rc5
- 2.Sb7#
- 2.bxc5#
- 1...Rd5
- 2.Sb7#
- 1...Re5
- 2.Qc6#
- 1...Bxf3!
- threat
- 1.Bb7?
- threat
- 2.Re6#
- 1...e5
- 2.Qc5#
- 1...e6
- 2.Rxe6#
- 1...Qe5
- 2.Qd4#
- 1...Rf3
- 2.Qd4#
- 1...Rf4
- 2.Qe5#
- 1...Rc5
- 2.bxc5#
- 1...Re5
- 2.Qc6#
- 1...Rd5!
- threat
- 1.Rxf6+?
- 1...Rxf6
- 2.Qd4#
- 2.Qc5#
- 1...e6
- 2.Rxe6#
- 1...exf6!
- 1...Rxf6
- 1.Bxg3+?
- Keys
- 1.Ba8!
- threat
- 2.Re6#
- 1...e5
- 2.Qc5#
- 1...e6
- 2.Rxe6#
- 1...Qe5
- 2.Qd4#
- 1...Rf3
- 2.Qd4#
- 1...Rf4
- 2.Qe5#
- 1...Rc5
- 2.bxc5#
- 1...Rd5
- 2.Sb7#
- 1...Re5
- 2.Qc6#
- threat
- 1.Ba8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(b);S_CUTR(f)::QAR2(C)
- R(f);N_GUARD::QAR2(C)
- R(f);N_GUARD,N_SPINQ(b)::QAR2(C)
- R(f);OGATE::P(F),XR(f)
- R(f);N_PINQ(C),N_SPINQ(b),SBLOCK::QAR1(C)
- P(j);N_PINQ(C),N_SPINQ(b)::QAB1(C)
- Tries
- Try
- B(B);CHECK,XQ(b)
- Vars
- R(f);P_SPINR(f)::QAR2(C)
- P(j);N_PINQ(C),P_SPINP(j)::QAB1(C)
- Refutation
- P(d);XB(B)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(f);N_GUARD::QAR2(C)
- P(j);N_PINQ(C),N_SPINQ(b)::QAB1(C)
- P(j);N_SPINB(i)::R1(E),XP(j)
- Q(b);S_CUTR(f)::QAR2(C)
- R(f);::S(L)
- R(f);N_PINQ(C),N_SPINQ(b)::QAR1(C)
- Refutation
- B(c);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(f);N_GUARD::QAR2(C)
- P(j);N_PINQ(C),N_SPINQ(b)::QAB1(C)
- P(j);N_SPINB(i)::R1(E),XP(j)
- Q(b);S_CUTR(f)::QAR2(C)
- R(f);::S(L)
- R(f);N_PINQ(C),N_SPINQ(b)::QAR1(C)
- Refutation
- B(c);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(f);N_GUARD,XB(G)::QAR2(C)
- P(j);N_PINQ(C),N_SPINQ(b)::QAB1(C)
- P(j);N_SPINB(i)::R1(E),XP(j)
- Q(b);S_CUTR(f)::QAR2(C)
- R(f);::S(L)
- R(f);N_PINQ(C),N_SPINQ(b)::QAR1(C)
- Refutation
- B(c);XB(G)
- Try
- B(G);
- Threat
- R1(E)
- Vars
- P(j);N_PINQ(C),N_SPINQ(b)::QAB1(C)
- P(j);N_SPINB(i)::R1(E),XP(j)
- Q(b);S_CUTR(f)::QAR2(C)
- R(f);N_GUARD::QAR2(C)
- R(f);N_GUARD,N_SPINQ(b),S_CUTQ(b)::QAB1(C)
- R(f);OGATE::P(F),XR(f)
- R(f);N_PINQ(C),N_SPINQ(b)::QAR1(C)
- Refutation
- R(f);
- Try
- R(I);CHECK,N_SPINQ(C),XB(i)
- Vars
- P(j);P_SPINP(j)::R1(I),XP(j)
- Refutation
- P(j);XR(I)
- Try
- Actual
- B(G);
- Threat
- R1(E)
- Vars
- P(j);N_PINQ(C),N_SPINQ(b)::QAB1(C)
- P(j);N_SPINB(i)::R1(E),XP(j)
- Q(b);S_CUTR(f)::QAR2(C)
- R(f);N_GUARD::QAR2(C)
- R(f);N_GUARD,N_SPINQ(b),S_CUTQ(b)::QAB1(C)
- R(f);OGATE::P(F),XR(f)
- R(f);SBLOCK::S(L)
- R(f);N_PINQ(C),N_SPINQ(b)::QAR1(C)
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).