MESON Chess Problem Database

Problem Display
PID: 222694 (3B4/8/2Q5/R2p4/3k4/1b4N1/nK6/3N4 w - - 0 1)

Hanauer, John J

Cincinnati Commercial, 1884

3B4/8/2Q5/R2p4/3k4/1b4N1/nK6/3N4

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qf6#
    • 1...Bc2
      • 2.Rxd5#
      • 2.Qxd5#
    • 1...Ba4
      • 2.Rxd5#
      • 2.Qxd5#
    • 1...Sc1
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sb4
      • 2.Qc3#
  • Tries
    • 1.Kxb3?
      • threat
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Kd3
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Ke5
        • 2.Qf6#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb4
        • 2.Qc3#
      • 1...Sc1+!
    • 1.Rxa2?
      • threat
        • 2.Qc3#
      • 1...Kd3
        • 2.Qc3#
      • 1...Ke5
        • 2.Qf6#
      • 1...Bc4!
  • Keys
    • 1.Ra3!
      • 1...Kd3
        • 2.Qxd5#
      • 1...Ke5
        • 2.Qf6#
      • 1...Bxd1
        • 2.Bf6#
      • 1...Bc4
        • 2.Bf6#
      • 1...Bc2
        • 2.Bf6#
      • 1...Ba4
        • 2.Bf6#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb4
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINP(d),S_FLIGHT::QAB1(E)
    • S(a);N_GUARD::QAB1(E)
    • S(a);N_GUARD::QAB1(E),XS(a)
  • Tries
    • Try
      • K(B);P-FLIGHT,XB(b)
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P_SPINP(d),S_FLIGHT::QAB1(E)
        • S(a);N_GUARD::QAB1(E),XS(a)
        • S(a);N_GUARD::QAB1(E)
      • Refutation
        • S(a);CHECK
    • Try
      • R(D);XS(a)
      • Threat
        • QAB1(E)
      • Vars
        • K(c);P-FLIGHT::QAR1(E)
        • K(c);S_FLIGHT::QAB1(E)
      • Refutation
        • B(b);
  • Actual
    • R(D);
    • Vars
      • K(c);P-FLIGHT,P_SPINB(b)::QAR2(E),XP(d)
      • K(c);S_FLIGHT::QAB1(E)
      • B(b);XS(A)::B(F)
      • B(b);::B(F)
      • S(a);N_GUARD::QAB1(E)
      • S(a);N_GUARD::QAB1(E),XS(a)
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