MESON Chess Problem Database
Problem Display
PID: 882 (1r4n1/8/p1pR3b/2P1Np1B/Kn2k3/Q2pp1RN/1B6/6rb w - - 0 1)
Lincoln, Robert A
British Chess Magazine, 1994
#2
9 + 12
SOLUTION
- SOUND
- Sets
- 1...Rg2
- 2.Bf3#
- 1...Ra8
- 2.Qxb4#
- 1...Rc8
- 2.Qxb4#
- 1...Rd8
- 2.Qxb4#
- 1...Re8
- 2.Qxb4#
- 1...Rf8
- 2.Qxb4#
- 1...Bf3
- 2.Bxf3#
- 1...Sa2
- 2.Qxd3#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Qxd3#
- 1...f4
- 2.Bg6#
- 1...Rg2
- Tries
- 1.Sxd3?
- threat
- 2.Rd4#
- 1...Sxd3
- 2.Qxd3#
- 1...f4
- 2.Bg6#
- 1...Rd8
- 2.Qxb4#
- 1...Bg7
- 2.Sg5#
- 1...Sd5
- 2.Re6#
- 1...Sc2!
- threat
- 1.Sf3?
- threat
- 2.Rd4#
- 1...Bxf3
- 2.Bxf3#
- 1...f4
- 2.Bg6#
- 1...Rd8
- 2.Qxb4#
- 1...Bg7
- 2.Sfg5#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Re6#
- 1...e2!
- threat
- 1.Sc4?
- threat
- 2.Rd4#
- 1...f4
- 2.Bg6#
- 1...Bg7
- 2.Rxe3#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Re6#
- 1...Rd8!
- threat
- 1.Sg4?
- threat
- 2.Rd4#
- 1...fxg4
- 2.Bg6#
- 1...f4
- 2.Bg6#
- 1...Rd8
- 2.Qxb4#
- 1...Bg7
- 2.Rxe3#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Re6#
- 1...Rxg3!
- threat
- 1.Sxc6?
- threat
- 2.Rd4#
- 1...Sxc6
- 2.Qxd3#
- 1...f4
- 2.Bg6#
- 1...Rd8
- 2.Qxb4#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Re6#
- 1...Bg7!
- threat
- 1.Sg6?
- threat
- 2.Rd4#
- 1...Rd8
- 2.Qxb4#
- 1...Bg7
- 2.Sg5#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Re6#
- 1...f4!
- threat
- 1.Sd7?
- threat
- 2.Rd4#
- 1...f4
- 2.Bg6#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Re6#
- 1...Bg7!
- threat
- 1.Rg4+?
- 1...Bf4
- 2.Sg5#
- 2.Rxf4#
- 1...fxg4
- 2.Bg6#
- 1...f4
- 2.Bg6#
- 1...Rxg4!
- 1...Bf4
- 1.Qc3?
- threat
- 2.Qd4#
- 2.Qc4#
- 1...f4
- 2.Bg6#
- 1...Rc1
- 2.Qd4#
- 1...Sc2
- 2.Qxd3#
- 1...Ra1+!
- threat
- 1.Sxd3?
- Keys
- 1.Sf7!
- threat
- 2.Rd4#
- 1...f4
- 2.Bg6#
- 1...Bg7
- 2.Sfg5#
- 1...Rd8
- 2.Qxb4#
- 1...Sc2
- 2.Qxd3#
- 1...Sd5
- 2.Re6#
- threat
- 1.Sf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(a);S_CUTB(b)::B(H)
- R(k);N_GUARD::QAR(B),XS(e)
- B(b);N_GUARD::B(H),XB(b)
- S(e);N_GUARD::QAB1(B),XP(c)
- P(g);OGATEB::B(H)
- Tries
- Try
- S(G);XP(c)
- Threat
- R1(I)
- Vars
- S(e);OGATE,XS(G)::QAB1(B),XS(e)
- P(g);OGATEB::B(H)
- R(k);N_GUARD::QAR(B),XS(e)
- B(j);N_GUARD::S(D)
- S(e);SBLOCK::R(I)
- Refutation
- S(e);
- Try
- S(G);
- Threat
- R1(I)
- Vars
- B(b);OGATE,XS(G)::B(H),XB(b)
- P(g);OGATEB::B(H)
- R(k);N_GUARD::QAR(B),XS(e)
- B(j);N_GUARD::S(G)
- S(e);N_GUARD::QAB1(B),XP(c)
- S(e);SBLOCK::R(I)
- Refutation
- P(d);
- Try
- S(G);
- Threat
- R1(I)
- Vars
- P(g);OGATEB::B(H)
- B(j);N_GUARD::R1(C),XP(d)
- S(e);N_GUARD::QAB1(B),XP(c)
- S(e);SBLOCK::R(I)
- Refutation
- R(k);
- Try
- S(G);
- Threat
- R1(I)
- Vars
- P(g);OGATEB,XS(G)::B(H)
- P(g);OGATEB::B(H)
- R(k);N_GUARD::QAR(B),XS(e)
- B(j);N_GUARD::R1(C),XP(d)
- S(e);N_GUARD::QAB1(B),XP(c)
- S(e);SBLOCK::R(I)
- Refutation
- R(a);XR(C)
- Try
- S(G);XP(i)
- Threat
- R1(I)
- Vars
- S(e);N_GUARD,XS(G)::QAB1(B),XP(c)
- P(g);OGATEB::B(H)
- R(k);N_GUARD::QAR(B),XS(e)
- S(e);N_GUARD::QAB1(B),XP(c)
- S(e);SBLOCK::R(I)
- Refutation
- B(j);
- Try
- S(G);
- Threat
- R1(I)
- Vars
- R(k);N_GUARD::QAR(B),XS(e)
- B(j);N_GUARD::S(D)
- S(e);N_GUARD::QAB1(B),XP(c)
- S(e);SBLOCK::R(I)
- Refutation
- P(g);
- Try
- S(G);
- Threat
- R1(I)
- Vars
- P(g);OGATEB::B(H)
- S(e);N_GUARD::QAB1(B),XP(c)
- S(e);SBLOCK::R(I)
- Refutation
- B(j);
- Try
- R(C);CHECK
- Vars
- P(g);S_CUTB(j),S_CUTR(a),XR(C)::B(H)
- P(g);P_SPINP(g),S_CUTB(j),S_CUTR(a)::B(H)
- Refutation
- R(a);XR(C)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- P(g);OGATEB::B(H)
- R(a);::QAR1(B)
- S(e);N_GUARD::QAB1(B),XP(c)
- Refutation
- R(a);CHECK
- Try
- Actual
- S(G);
- Threat
- R1(I)
- Vars
- P(g);OGATEB::B(H)
- B(j);N_GUARD::S(G)
- R(k);N_GUARD::QAR(B),XS(e)
- S(e);N_GUARD::QAB1(B),XP(c)
- S(e);SBLOCK::R(I)
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