MESON Chess Problem Database
Problem Display
PID: 49967 (3bR2B/1ppP3p/7R/2NkP2p/BKp5/1NP2r2/1p4Q1/3n1r2 w - - 0 1)
Degener, Udo
2nd Comm., Heureka, 1993
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Qxf3#
- 1...Rh1
- 2.Qxf3#
- 1...Bf6
- 2.Qg8#
- 1...Se3
- 2.Qd2#
- 1...cxb3
- 2.Bxb3#
- 1...b6
- 2.Bc6#
- 1...c6
- 2.Rd6#
- 1...Rg1
- Tries
- 1.Bf6?
- threat
- 2.Qg8#
- 1...Rg1
- 2.Qxf3#
- 1...b5!
- threat
- 1.Rf6?
- threat
- 2.Qg8#
- 1...Rg1
- 2.Qxf3#
- 1...Be7!
- threat
- 1.Qe2?
- threat
- 2.Qxc4#
- 2.Qe4#
- 1...Rxc3
- 2.Qe4#
- 1...Sxc3
- 2.Qxc4#
- 1...cxb3
- 2.Bxb3#
- 2.Qc4#
- 2.Qe4#
- 1...b1Q
- 2.Qxc4#
- 1...b1B
- 2.Qxc4#
- 1...Re1
- 2.Qxc4#
- 1...Rd3
- 2.Qe4#
- 1...Re3
- 2.Qxc4#
- 1...Sf2
- 2.Qxc4#
- 1...Se3
- 2.Qd2#
- 1...b5
- 2.Qe4#
- 1...Rf4!
- threat
- 1.Qg4?
- threat
- 2.Qe6#
- 2.Qxc4#
- 2.Qd4#
- 2.Qe4#
- 1...Rxc3
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 1...Sxc3
- 2.Qe6#
- 2.Qxc4#
- 2.Qd4#
- 1...cxb3
- 2.Bxb3#
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 2.c4#
- 1...b1Q
- 2.Qe6#
- 2.Qxc4#
- 2.Qd4#
- 1...b1B
- 2.Qe6#
- 2.Qxc4#
- 2.Qd4#
- 1...Re1
- 2.Qe6#
- 2.Qxc4#
- 2.Qd4#
- 1...Rd3
- 2.Qe6#
- 2.Qxc4#
- 2.Qe4#
- 1...Re3
- 2.Qe6#
- 2.Qxc4#
- 2.Qd4#
- 1...Rf4
- 2.Qe6#
- 1...Rf5
- 2.Qxc4#
- 2.Qd4#
- 2.Qe4#
- 1...Rf6
- 2.Qxc4#
- 2.Qd4#
- 2.Qe4#
- 1...Sf2
- 2.Qe6#
- 2.Qxc4#
- 2.Qd4#
- 1...Se3
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 1...b5
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 1...hxg4!
- threat
- 1.Qg6?
- threat
- 2.Qe4#
- 2.Qe6#
- 1...Sxc3
- 2.Qe6#
- 1...b1Q
- 2.Qe6#
- 1...b1B
- 2.Qe6#
- 1...Re1
- 2.Qe6#
- 1...Re3
- 2.Qe6#
- 1...Rf4
- 2.Qe6#
- 1...Rf5
- 2.Qe6#
- 1...Rf6
- 2.Qe4#
- 1...Bf6
- 2.Qe4#
- 2.Qf7#
- 2.Qg8#
- 1...Sf2
- 2.Qe6#
- 1...hxg6!
- threat
- 1.Bf6?
- Keys
- 1.Bb5!
- threat
- 2.Bxc4#
- 1...cxb3
- 2.Bc4#
- 1...Bf6
- 2.Qg8#
- 1...Se3
- 2.Qd2#
- threat
- 1.Bb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- R(b);N_GUARD::QAB(A),XR(d)
- B(k);::QAB(A)
- S(a);::QAR(A)
- P(e);OGATE,XS(B)::B(D),XP(e)
- P(h);N_GUARD::B(D)
- P(i);N_GUARD::R1(H)
- Tries
- Try
- B(K);
- Threat
- QAB(A)
- Vars
- R(b);N_GUARD::QAB(A),XR(d)
- Refutation
- P(h);
- Try
- R(H);
- Threat
- QAB(A)
- Vars
- R(b);N_GUARD::QAB(A),XR(d)
- Refutation
- B(k);P_PINS(F)
- Try
- Q(A);N_PINR(d)
- Threat
- DUALS(2)
- Vars
- R(d);XP(C)::QAB1(A)
- S(a);XP(C)::QAB1(A),XP(e)
- P(c);P_PINS(B)::QAB1(A),XP(e)
- P(c);::QAB1(A),XP(e)
- R(b);::QAB1(A),XP(e)
- R(d);::QAB1(A)
- R(d);::QAB1(A),XP(e)
- S(a);::QAB1(A),XP(e)
- S(a);S_CUTR(d)::QAR(A)
- P(h);::QAB1(A)
- Refutation
- R(d);
- Try
- Q(A);N_PINR(d)
- Threat
- DUALS(4)
- Vars
- R(d);::QAB1(A)
- Refutation
- P(g);XQ(A)
- Try
- Q(A);N_PINR(d)
- Threat
- DUALS(2)
- Vars
- S(a);XP(C)::QAB1(A)
- P(c);P_PINS(B)::QAB1(A)
- P(c);::QAB1(A)
- R(b);::QAB1(A)
- R(d);::QAB1(A)
- S(a);::QAB1(A)
- Refutation
- P(j);XQ(A)
- Try
- Actual
- B(D);
- Threat
- B(D),XP(e)
- Vars
- P(e);XS(B)::B(D)
- B(k);::QAB(A)
- S(a);::QAR(A)
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