MESON Chess Problem Database

Problem Display
PID: 129728 (3Q3K/3B4/1p3p2/7n/1n2kP2/1N1R4/3Bb3/8 w - - 0 1)

Erlin, Konrad (AKA Erlinger, Konrad)

Bohemia, 1904

3Q3K/3B4/1p3p2/7n/1n2kP2/1N1R4/3Bb3/8

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Rd4#
    • 1...Sxd3
      • 2.Qa8#
    • 1...b5
      • 2.Sc5#
  • Tries
    • 1.Bg4?
      • threat
        • 2.Rd4#
        • 2.Qd4#
      • 1...Bxd3
        • 2.Qd4#
      • 1...Sxd3
        • 2.Qd4#
        • 2.Qa8#
      • 1...Sxf4
        • 2.Re3#
        • 2.Qd4#
      • 1...Sd5
        • 2.Rd4#
        • 2.Qxd5#
      • 1...Sc2
        • 2.Qd5#
      • 1...Sc6
        • 2.Qd5#
      • 1...Bxg4!
    • 1.Bc6+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sxc6
        • 2.Qd5#
      • 1...Kf5!
    • 1.Be6?
      • threat
        • 2.Qd4#
      • 1...Sxd3
        • 2.Qd5#
        • 2.Qa8#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sc2
        • 2.Qd5#
      • 1...Sc6
        • 2.Qd5#
      • 1...Bxd3!
    • 1.Re3+?
      • 1...Kd5
        • 2.Bb5#
      • 1...Kxf4!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qc4#
      • 1...Kxd3
        • 2.Bf5#
      • 1...Bxd3
        • 2.Qg2#
      • 1...Sxd3
        • 2.Qa8#
      • 1...Sxf4
        • 2.Re3#
      • 1...Sc2
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sc6
        • 2.Qd5#
      • 1...b5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::R1(C)
    • S(b);N_GUARD,SBLOCK,XR(C)::QAB(F)
    • P(e);N_GUARD::S(B)
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XR(C)::QAR1(F)
        • S(b);N_GUARD::QAB1(F)
      • Refutation
        • B(a);XB(E)
    • Try
      • B(E);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(F),XS(b)
        • S(b);N_GUARD,XB(E)::QAB1(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(E);
      • Threat
        • QAR1(F)
      • Vars
        • S(b);N_GUARD::QAB1(F),XS(b)
        • S(b);N_GUARD::QAB1(F)
      • Refutation
        • B(a);XR(C)
    • Try
      • R(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR(F)+B(E)
      • Refutation
        • K(c);P-FLIGHT,XP(D)
  • Actual
    • Q(F);
    • Threat
      • QAR2(F)
    • Vars
      • K(c);S_FLIGHT,XR(C)::B(E)
      • B(a);N_GUARD,SBLOCK,XR(C)::QAB(F)
      • S(b);N_GUARD,SBLOCK,XR(C)::QAB(F)
      • S(d);SBLOCK,XP(D)::R1(C)
      • S(b);N_GUARD::QAB1(F)
      • S(b);N_GUARD::QAB1(F),XS(b)
      • P(e);N_GUARD::S(B)
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