MESON Chess Problem Database
Problem Display
PID: 99512 (Kn2nr2/2p1R3/8/pQ1p4/r7/bB2B3/3p2pN/4k3 w - - 0 1)
Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)
Kagan Chess Club, 1922
#2
6 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Bd4#
- 1...Rf3
- 2.Sxf3#
- 1...Rg8
- 2.Sf3#
- 1...Rh8
- 2.Sf3#
- 1...Bc1
- 2.Bd4#
- 1...Bb2
- 2.Bd4#
- 1...Bb4
- 2.Bc5#
- 1...Sf6
- 2.Sf3#
- 1...c5
- 2.Bd4#
- 1...Rb4
- Tries
- 1.Qd3?
- threat
- 2.Qxd2#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 2.Qd2#
- 1...d1B
- 2.Qxd1#
- 2.Qd2#
- 1...d1R
- 2.Qxd1#
- 1...Rf2
- 2.Bxd2#
- 1...Bc1
- 2.Bd4#
- 1...Bb4
- 2.Bc5#
- 1...Rd4!
- threat
- 1.Qxd5?
- threat
- 2.Qxd2#
- 1...Ke2
- 2.Qxd2#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 2.Qd2#
- 1...d1B
- 2.Qxd1#
- 2.Qd2#
- 1...d1R
- 2.Qxd1#
- 1...Rf2
- 2.Bxd2#
- 1...Bc1
- 2.Bd4#
- 1...Bb4
- 2.Bc5#
- 1...Rd4!
- threat
- 1.Qd3?
- Keys
- 1.Qb4!
- threat
- 2.Bg1#
- 2.Bd4#
- 2.Bc5#
- 2.Bb6#
- 2.Ba7#
- 2.Qxd2#
- 1...axb4+
- 2.Ba7#
- 1...Ke2
- 2.Qxd2#
- 1...Rxb4
- 2.Bd4#
- 1...Bxb4
- 2.Bc5#
- 1...g1Q
- 2.Bxg1#
- 2.Qxd2#
- 1...g1S
- 2.Bxg1#
- 2.Qxd2#
- 1...g1B
- 2.Bxg1#
- 2.Qxd2#
- 1...g1R
- 2.Bxg1#
- 2.Bd4#
- 2.Bc5#
- 2.Bb6#
- 2.Ba7#
- 2.Qxd2#
- 1...Rf2
- 2.Bxd2#
- 1...Rf3
- 2.Qxd2#
- 1...Rf4
- 2.Qxd2#
- 1...Rf5
- 2.Qxd2#
- 1...Rf6
- 2.Qxd2#
- 1...Rf7
- 2.Qxd2#
- 1...Bc1
- 2.Bg1#
- 2.Bd4#
- 2.Bc5#
- 2.Bb6#
- 2.Ba7#
- 1...Bb2
- 2.Bd4#
- 2.Qxd2#
- 1...Sc6
- 2.Qxd2#
- 1...Sd7
- 2.Qxd2#
- 1...Sd6
- 2.Qxd2#
- 1...Sf6
- 2.Qxd2#
- 1...Sg7
- 2.Qxd2#
- 1...d4
- 2.Bg1#
- 2.Bxd4#
- 2.Qxd2#
- 1...c5
- 2.Bg1#
- 2.Bd4#
- 2.Bxc5#
- 2.Qxd2#
- threat
- 1.Qb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 11
- REMOVED MATES = 5
- Sets
- R(e);S_CUTB(d)::R(E)+B(C)
- R(k);N_GUARD::S(A),XR(k)
- R(k);N_GUARD::S(A)
- B(d);N_GUARD::R(E)+B(C)
- B(d);S_CUTR(e)::R(E)+B(C)
- S(j);S_CUTR(k)::S(A)
- P(h);S_CUTB(d)::R(E)+B(C)
- Tries
- Try
- Q(D);
- Threat
- QAB1(D),XP(b)
- Vars
- P(b);OGATE::QAR1(D),XQ(b)
- P(b);OGATE::QAR1(D),XR(b)
- R(k);SBLOCK::R(E)+B(C),DCHECK,XP(b)
- B(d);N_GUARD::R(E)+B(C)
- B(d);S_CUTR(e)::R(E)+B(C)
- Refutation
- R(e);
- Try
- Q(D);XP(g)
- Threat
- QAB1(D),XP(b)
- Vars
- K(a);P-FLIGHT::QAR1(D),XP(b)
- P(b);OGATE::QAR1(D),XQ(b)
- P(b);OGATE::QAR1(D),XR(b)
- R(k);SBLOCK::R(E)+B(C),DCHECK,XP(b)
- B(d);N_GUARD::R(E)+B(C)
- B(d);S_CUTR(e)::R(E)+B(C)
- Refutation
- R(e);
- Try
- Actual
- Q(D);P_PINP(b)
- Threat
- DUALS(6)
- Vars
- P(f);CHECK,N_SPINP(b),XQ(D)::R(E)+B(C)
- K(a);N_SPINP(b),P-FLIGHT::QAR1(D),XP(b)
- R(e);N_SPINP(b),XQ(D)::R(E)+B(C)
- B(d);N_SPINP(b),XQ(D)::R(E)+B(C)
- R(k);SBLOCK::R(E)+B(C),DCHECK,XP(b)
- R(k);::QAB1(D),XP(b)
- S(i);::QAB1(D),XP(b)
- S(j);::QAB1(D),XP(b)
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