MESON Chess Problem Database

Problem Display
PID: 170233 (8/2nR4/1Q2p3/r1p3bN/4kBNp/2P3pK/b3B3/8 w - - 0 1)

Kupper, Josef

Tages-Anzeiger, 2011

8/2nR4/1Q2p3/r1p3bN/4kBNp/2P3pK/b3B3/8

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Bd3#
    • 1...Bb1
      • 2.Qxb1#
    • 1...Bd5
      • 2.Qb1#
    • 1...Sd5
      • 2.Qxe6#
    • 1...e5
      • 2.Qg6#
  • Tries
    • 1.Sf2+?
      • 1...Kf5
        • 2.Bd3#
      • 1...gxf2!
    • 1.Sgf6+?
      • 1...Kf5
        • 2.Bd3#
      • 1...Bxf6!
    • 1.Rd4+?
      • 1...Kf5
        • 2.Bd3#
      • 1...cxd4!
    • 1.Qb3?
      • threat
        • 2.Qc2#
      • 1...Kf5
        • 2.Bd3#
        • 2.Qc2#
      • 1...Bb1
        • 2.Qxb1#
      • 1...Bxb3!
    • 1.Qc6+?
      • 1...Kf5
        • 2.Bd3#
      • 1...Sd5
        • 2.Qxe6#
      • 1...Bd5!
    • 1.Qd6?
      • threat
        • 2.Qe5#
        • 2.Qd3#
      • 1...Kf5
        • 2.Bd3#
        • 2.Qd3#
      • 1...Bxf4
        • 2.Qxf4#
        • 2.Qd3#
      • 1...Bb1
        • 2.Qe5#
      • 1...Bc4
        • 2.Qe5#
      • 1...Bd5
        • 2.Qe5#
      • 1...Bf6
        • 2.Qd3#
      • 1...Sd5
        • 2.Qe5#
        • 2.Qxe6#
      • 1...e5
        • 2.Qxe5#
        • 2.Qd3#
        • 2.Qg6#
      • 1...c4!
    • 1.Qb7+?
      • 1...Kf5
        • 2.Bd3#
      • 1...Bd5
        • 2.Qb1#
      • 1...Sd5!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Re5#
      • 1...Kxd5
        • 2.Qb7#
      • 1...Bxd5
        • 2.Qb1#
      • 1...Bxf4
        • 2.Shf6#
      • 1...Sxd5
        • 2.Qxe6#
      • 1...exd5
        • 2.Qg6#
      • 1...e5
        • 2.Rxe5#
      • 1...Bf6
        • 2.Sgxf6#
      • 1...c4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • K(c);S_FLIGHT::B(A)
    • B(a);N_GUARD::QAB(G),XB(a)
    • B(a);N_GUARD::QAB(G)
    • S(i);N_GUARD,S_CUTB(a)::QAR2(G),XP(h)
    • P(h);OGATE::QAB(G)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT::B(A)
      • Refutation
        • P(b);XS(E)
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT::B(A)
      • Refutation
        • B(g);XS(E)
    • Try
      • R(H);CHECK
      • Vars
        • K(c);S_FLIGHT::B(A)
      • Refutation
        • P(f);XR(H)
    • Try
      • Q(G);
      • Threat
        • QAB(G)
      • Vars
        • B(a);N_GUARD::QAB(G),XB(a)
      • Refutation
        • B(a);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);S_FLIGHT::B(A)
        • S(i);N_GUARD,P_SPINS(i),S_CUTB(a)::QAR2(G),XP(h)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR1(G)
        • B(g);::QAB1(G)
      • Refutation
        • P(f);
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);S_FLIGHT::B(A)
        • B(a);N_GUARD,P_SPINB(a)::QAB(G)
      • Refutation
        • S(i);P_SPINS(i)
  • Actual
    • R(H);
    • Threat
      • R1(H)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(H)::QAB(G)
      • B(a);N_GUARD,SBLOCK,XR(H)::QAB(G)
      • B(g);N_GUARD,SBLOCK,XB(D)::S(F)
      • S(i);N_GUARD,XR(H)::QAR2(G),XP(h)
      • P(h);OGATE,SBLOCK,XR(H)::QAB(G)
      • P(h);::R1(H),XP(h)
      • B(g);N_GUARD::S(E),XB(g)
      • P(f);OGATE::QAR1(G)
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