MESON Chess Problem Database

Problem Display
PID: 218457 (8/8/6P1/P6Q/1n1p4/RN1kp1P1/BP1Pb1R1/N6K w - - 0 1)

Brown, Theodore Morris

Philadelphia Times, 1882

8/8/6P1/P6Q/1n1p4/RN1kp1P1/BP1Pb1R1/N6K

#2

12 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sc5#
    • 1...Bd1
      • 2.Sc5#
    • 1...Bf1
      • 2.Sc5#
    • 1...Bf3
      • 2.Sc5#
    • 1...Bg4
      • 2.Sc5#
    • 1...Bxh5
      • 2.Sc5#
    • 1...exd2
      • 2.Sc5#
      • 2.Qxe2#
  • Tries
    • 1.Bb1+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Sc2!
    • 1.Qc5?
      • threat
        • 2.Qxd4#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sc6
        • 2.Bb1#
        • 2.Qc2#
      • 1...Ke4!
  • Keys
    • 1.Ra4!
      • 1...Kc4
        • 2.Sc1#
      • 1...Ke4
        • 2.Sc5#
      • 1...Bxh5
        • 2.Sc5#
      • 1...Sxa2
        • 2.Rxd4#
        • 2.Qf5#
      • 1...exd2
        • 2.Qxe2#
      • 1...Bd1
        • 2.Sc5#
      • 1...Bf1
        • 2.Sc5#
      • 1...Bf3
        • 2.Sc5#
      • 1...Bg4
        • 2.Sc5#
      • 1...Sc2
        • 2.Qf5#
      • 1...Sd5
        • 2.Bb1#
        • 2.Rxd4#
        • 2.Qf5#
      • 1...Sa6
        • 2.Bb1#
        • 2.Rxd4#
        • 2.Qf5#
      • 1...Sc6
        • 2.Bb1#
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::S(H)
    • B(a);::R(G)+S(H),DCHECK
    • B(a);P_PINR(F)::R(G)+S(H),DCHECK
    • B(a);XQ(K)::R(G)+S(H),DCHECK
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(K)
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • Q(K);
      • Threat
        • QAR1(K),XP(e)
      • Vars
        • S(d);N_GUARD::QAB1(K),XS(d)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(G);
    • Vars
      • K(b);P_SPINS(d),S_FLIGHT::B(C)+S(H)
      • K(b);S_FLIGHT::S(H)
      • B(a);XQ(K)::S(H)
      • P(c);XP(E)::QAB1(K),XB(a)
      • B(a);::S(H)
      • B(a);P_PINR(F)::S(H)
      • S(d);::QAB(K)
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