MESON Chess Problem Database
Problem Display
PID: 162479 (B7/p2N2b1/KB1P4/5nQr/2k1N1R1/P4n1R/P3P3/3r4 w - - 0 1)
Stoyanov, Kiril N
Chess, 1956
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Qc1#
- 1...Bc3
- 2.Sd2#
- 1...Bd4
- 2.Qg8#
- 1...Se1
- 2.Sd2#
- 1...Sg1
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sh2
- 2.Sd2#
- 1...S3d4
- 2.Rc3#
- 1...S3h4
- 2.Sd2#
- 1...Se5
- 2.Sd2#
- 2.Rc3#
- 1...Sxg5
- 2.Sd2#
- 1...S5d4
- 2.Bd5#
- 1...Rd4
- Tries
- 1.Se5+?
- 1...Sxe5
- 2.Sd2#
- 2.Rc3#
- 1...Bxe5!
- 1...Sxe5
- 1.Rxf3?
- threat
- 2.Sd2#
- 1...Bd4
- 2.Qg8#
- 1...Rd2
- 2.Sxd2#
- 1...Rd3
- 2.exd3#
- 1...Sd4
- 2.Bd5#
- 2.Rc3#
- 1...Se3!
- threat
- 1.Qc1+?
- 1...Bc3
- 2.Sd2#
- 2.Qxc3#
- 1...Rxc1!
- 1...Bc3
- 1.Qd2?
- threat
- 2.Bd5#
- 2.Qb4#
- 1...Sxd2
- 2.Sxd2#
- 1...Sxd6
- 2.Sxd6#
- 2.Qb4#
- 1...Bd4
- 2.Qb4#
- 1...Rb1
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Bc3
- 2.Bd5#
- 2.Qxc3#
- 1...S3d4
- 2.Rc3#
- 2.Qc3#
- 2.Qb4#
- 1...Se3
- 2.Qb4#
- 1...Sg3
- 2.Qb4#
- 1...S5d4
- 2.Qc3#
- 2.Qb4#
- 1...S5h4
- 2.Qb4#
- 1...Sh6
- 2.Qb4#
- 1...Se7
- 2.Qb4#
- 1...Rxd2!
- threat
- 1.Qe3?
- threat
- 2.Sd2#
- 2.Qc5#
- 2.Qb3#
- 1...Sxd6
- 2.Sd2#
- 2.Sxd6#
- 2.Qb3#
- 1...axb6
- 2.Sd2#
- 2.Sxb6#
- 1...Bd4
- 2.Qb3#
- 1...Rb1
- 2.Sd2#
- 2.Qc5#
- 2.Qd3#
- 1...Rd2
- 2.Sxd2#
- 2.Qc5#
- 2.Qb3#
- 1...Rd3
- 2.Qc5#
- 2.Qxd3#
- 2.exd3#
- 1...Rd4
- 2.Qc1#
- 2.Qb3#
- 2.Qc3#
- 1...Rd5
- 2.Sd2#
- 2.Qb3#
- 1...Bc3
- 2.Sd2#
- 2.Qc5#
- 2.Qxc3#
- 1...Sd2
- 2.Sxd2#
- 2.Qc5#
- 2.Qd3#
- 1...S3d4
- 2.Qc3#
- 1...Sg3
- 2.Sd2#
- 2.Qb3#
- 1...S5d4
- 2.Qc3#
- 1...S5h4
- 2.Sd2#
- 2.Qb3#
- 1...Sh6
- 2.Sd2#
- 2.Qb3#
- 1...Se7
- 2.Sd2#
- 2.Qb3#
- 1...Sxe3!
- threat
- 1.Se5+?
- Keys
- 1.Ba5!
- threat
- 2.Sd2#
- 1...Rxd6+
- 2.Sxd6#
- 1...Kd4
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sec5#
- 2.Sef6#
- 1...Bd4
- 2.Qg8#
- 1...Rd2
- 2.Sxd2#
- 1...Rd4
- 2.Qc1#
- 1...Sd2
- 2.Sxd2#
- 1...S3d4
- 2.Rc3#
- 1...S5d4
- 2.Bd5#
- threat
- 1.Ba5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD,S_CUTB(g)::QAR(G)
- B(g);SBLOCK::R(F)+S(E),DCHECK
- B(g);OGATE::QAB(G)
- S(b);::R(F)+S(E),DCHECK
- S(b);::R(F)+S(E),DCHECK,XS(b)
- S(b);OGATE::R1(D)
- S(b);XQ(G)::R(F)+S(E),DCHECK
- S(d);S_CUTR(a)::B(L)
- Tries
- Try
- S(K);CHECK
- Refutation
- B(g);XS(K)
- Try
- R(D);XS(b)
- Threat
- R(F)+S(E),DCHECK
- Vars
- B(g);OGATE::QAB(G)
- R(a);::R(F)+S(E),DCHECK,XR(a)
- R(a);OGATE::P(B),XR(a)
- Refutation
- S(d);
- Try
- Q(G);CHECK
- Refutation
- R(a);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- S(b);XQ(G)::R(F)+S(E),DCHECK,XS(b)
- B(g);::QAR1(G)
- S(d);::QAR1(G)
- Refutation
- R(a);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- B(g);::QAB1(G)
- S(b);S_CUTB(g)::QAR1(G)
- S(d);S_CUTB(g)::QAR1(G)
- Refutation
- S(d);XQ(G)
- Try
- Actual
- B(I);
- Threat
- R(F)+S(E),DCHECK
- Vars
- R(a);CHECK,XP(J)::R(F)+S(E),DCHECK,XR(a)
- B(g);OGATE,SBLOCK::QAB(G)
- R(a);::R(F)+S(E),DCHECK,XR(a)
- R(a);N_GUARD,SBLOCK,S_CUTB(g)::QAR(G)
- S(b);::R(F)+S(E),DCHECK,XS(b)
- S(b);OGATE,SBLOCK::R1(D)
- S(d);SBLOCK,S_CUTR(a)::B(L)
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