MESON Chess Problem Database
Problem Display
PID: 99178 (2q5/pPPB2B1/N1Np2rp/1pPk2bK/1R3P2/1p6/2b1Q2n/1n1r4 w - - 0 1)
Herpai, S Ferenc
Magyar Sakkelet, 1986
#2
11 + 13
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Rd4#
- 1...Re1
- 2.Rd4#
- 1...Rf1
- 2.Rd4#
- 1...Rg1
- 2.Rd4#
- 1...Rh1
- 2.Rd4#
- 1...Rd3
- 2.Qe4#
- 1...Rd4
- 2.Rxd4#
- 1...Re6
- 2.Qxe6#
- 1...Rf6
- 2.Se7#
- 1...Rxg7
- 2.Qe6#
- 1...Bd3
- 2.Rd4#
- 1...Be4
- 2.Qxe4#
- 1...Bxf4
- 2.Se7#
- 1...Bf6
- 2.Qe6#
- 1...Be7
- 2.Sxe7#
- 1...Sd2
- 2.Rd4#
- 1...dxc5
- 2.Qe5#
- 1...Rc1
- Tries
- 1.Rc4?
- threat
- 2.Sab4#
- 2.Scb4#
- 1...bxc4
- 2.Scb4#
- 1...Rd3
- 2.Qe4#
- 1...Bd3
- 2.Rd4#
- 1...b4
- 2.Saxb4#
- 2.Scxb4#
- 1...dxc5!
- threat
- 1.Re4?
- threat
- 2.Scb4#
- 1...Rd4
- 2.Rxd4#
- 1...b4
- 2.Scxb4#
- 2.Qc4#
- 1...dxc5!
- threat
- 1.Qxd1+?
- 1...Bd3
- 2.Rd4#
- 2.Qxd3#
- 1...Sd2
- 2.Rd4#
- 1...Bxd1+!
- 1...Bd3
- 1.Qd3+?
- 1...Bxd3
- 2.Rd4#
- 1...Rxd3!
- 1...Bxd3
- 1.Qf3+?
- 1...Be4
- 2.Qxe4#
- 2.Qxb3#
- 1...Sxf3!
- 1...Be4
- 1.Qxc2?
- threat
- 2.Qxb3#
- 2.Qe4#
- 2.Qf5#
- 1...Qxd7
- 2.Qe4#
- 1...Bxf4
- 2.Se7#
- 2.Qxb3#
- 2.Qe4#
- 1...dxc5
- 2.Qxc5#
- 1...Qe8
- 2.Qxb3#
- 1...Qf8
- 2.Qxb3#
- 2.Qe4#
- 1...Rc1
- 2.Rd4#
- 2.Qd3#
- 2.Qe4#
- 2.Qf5#
- 1...Re1
- 2.Rd4#
- 2.Qxb3#
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 1...Rd4
- 2.Rxd4#
- 2.Qf5#
- 1...Re6
- 2.Qxb3#
- 1...Rf6
- 2.Se7#
- 2.Qxb3#
- 2.Qe4#
- 1...Bf6
- 2.Qxb3#
- 2.Qe4#
- 1...Sd2
- 2.Rd4#
- 2.Qd3#
- 2.Qf5#
- 1...Sa3
- 2.Qxd1#
- 2.Qe4#
- 2.Qf5#
- 1...Sc3
- 2.Qxb3#
- 2.Qf5#
- 1...Sf3
- 2.Qxb3#
- 2.Qe4#
- 1...Sg4
- 2.Qxb3#
- 2.Qe4#
- 2.Qg2#
- 1...b2
- 2.Qb3#
- 2.Qe4#
- 2.Qf5#
- 1...bxc2!
- threat
- 1.Qd2+?
- 1...Bd3
- 2.Rd4#
- 1...Sxd2
- 2.Rd4#
- 1...Rxd2!
- 1...Bd3
- 1.Qg2+?
- 1...Be4
- 2.Qxe4#
- 1...Sf3!
- 1...Be4
- 1.Rc4?
- Keys
- 1.Ra4!
- threat
- 2.Scb4#
- 1...Rxg7
- 2.Qe6#
- 1...dxc5
- 2.Qe5#
- 1...Rd3
- 2.Qe4#
- 1...Rd4
- 2.Rxd4#
- 1...Rf6
- 2.Se7#
- 1...Bd3
- 2.Rd4#
- 1...Bf6
- 2.Qe6#
- 1...b4
- 2.Scxb4#
- threat
- 1.Ra4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- R(b);N_GUARD::R1(B)
- R(b);S_CUTB(c)::QAB1(A)
- R(b);N_GUARD::R1(B),XR(b)
- R(j);N_GUARD::QAB1(A),XR(j)
- R(j);S_CUTB(h)::S(G)
- R(j);N_GUARD,XB(K)::QAB1(A)
- B(c);S_CUTR(b)::R1(B)
- B(c);N_GUARD::QAB1(A),XB(c)
- B(h);N_GUARD,XP(C)::S(G)
- B(h);S_CUTR(j)::QAB1(A)
- B(h);N_GUARD::S(G),XB(h)
- S(a);S_CUTR(b)::R1(B)
- P(i);N_GUARD,XP(D)::QAR1(A)
- Tries
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- P(f);XR(B)::S(G)
- R(b);S_CUTB(c)::QAB1(A)
- B(c);S_CUTR(b)::R1(B)
- Refutation
- P(i);XP(D)
- Try
- R(B);
- Threat
- S(G)
- Vars
- R(b);N_GUARD::R1(B),XR(b)
- Refutation
- P(i);XP(D)
- Try
- Q(A);CHECK,XR(b)
- Vars
- S(a);P_SPINS(a)::R1(B)
- Refutation
- B(c);CHECK,XQ(A)
- Try
- Q(A);CHECK
- Vars
- B(c);XQ(A)::R1(B)
- Refutation
- R(b);XQ(A)
- Try
- Q(A);CHECK
- Refutation
- S(d);XQ(A)
- Try
- Q(A);XB(c)
- Threat
- DUALS(3)
- Vars
- Q(m);XB(J)::QAB1(A)
- P(i);OGATE,XP(D)::QAR1(A),XP(i)
- Q(m);::QAB(A),XP(e)
- R(b);N_GUARD::QAR2(A),XR(b)
- R(j);::QAB(A),XP(e)
- Refutation
- P(e);XQ(A)
- Try
- Q(A);CHECK
- Vars
- B(c);P_SPINB(c)::R1(B)
- S(a);XQ(A)::R1(B)
- Refutation
- R(b);XQ(A)
- Try
- Q(A);CHECK
- Vars
- B(c);N_GUARD,P_SPINB(c)::QAB1(A),XB(c)
- Refutation
- S(d);P_SPINS(d)
- Try
- Actual
- R(B);
- Threat
- S(G)
- Vars
- R(j);N_GUARD,XB(K)::QAB1(A)
- P(i);N_GUARD,XP(D)::QAR1(A)
- R(b);S_CUTB(c)::QAB1(A)
- R(b);N_GUARD::R1(B),XR(b)
- R(j);S_CUTB(h)::S(G)
- B(c);S_CUTR(b)::R1(B)
- B(h);S_CUTR(j)::QAB1(A)
- P(f);::S(G),XP(f)
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