MESON Chess Problem Database

Problem Display
PID: 2111 (8/8/6B1/8/1p6/1P4K1/bk1P4/R6Q w - - 0 1)

Brown, Theodore Morris

Source?, 0000

8/8/6B1/8/1p6/1P4K1/bk1P4/R6Q

#2

6 + 3

1679 American Chess Nuts 1868
3261 The Torch 1878

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qxb1#
    • 1...Bxb3
      • 2.Qb1#
      • 2.Qc1#
      • 2.Qh8#
  • Tries
    • 1.Bc2?
      • threat
        • 2.Qc1#
      • 1...Ka3
        • 2.Qc1#
      • 1...Bb1
        • 2.Qxb1#
      • 1...Kxc2!
    • 1.Bf7?
      • threat
        • 2.Qc1#
      • 1...Ka3
        • 2.Qc1#
      • 1...Bb1
        • 2.Qxb1#
      • 1...Kc2!
    • 1.Rb1+?
      • 1...Ka3
        • 2.Qa8#
        • 2.Qc1#
      • 1...Bxb1!
    • 1.Rxa2+?
      • 1...Kxb3
        • 2.Bf7#
        • 2.Qd5#
      • 1...Kxa2!
    • 1.Qb1+?
      • 1...Ka3
        • 2.Rxa2#
        • 2.Qxa2#
      • 1...Bxb1!
    • 1.Qd1?
      • 1...Bxb3
        • 2.Qb1#
        • 2.Qc1#
      • 1...Bb1
        • 2.Qxb1#
      • 1...Ka3!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qxa2#
      • 1...Kxa1
        • 2.Qh8#
      • 1...Kxb3
        • 2.Qxa2#
      • 1...Bxb3
        • 2.Rb1#
        • 2.Qh8#
      • 1...Bb1
        • 2.Rxb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAR1(B),XB(a)
  • Tries
    • Try
      • B(F);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P_SPINB(a),S_FLIGHT::QAB(B)
        • B(a);N_GUARD::QAR1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT,XB(F)
    • Try
      • B(F);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P_SPINB(a),S_FLIGHT::QAB(B)
        • B(a);N_GUARD::QAR1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(A);CHECK
      • Refutation
        • B(a);XR(A)
    • Try
      • R(A);CHECK,XB(a)
      • Refutation
        • K(b);P-FLIGHT,XR(A)
    • Try
      • Q(B);CHECK
      • Refutation
        • B(a);XQ(B)
    • Try
      • Q(B);
      • Vars
        • B(a);N_GUARD::QAR1(B),XB(a)
      • Refutation
        • K(b);P_SPINB(a),S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XB(a)
    • Vars
      • K(b);P_SPINB(a),S_FLIGHT,XR(A)::QAB(B)
      • K(b);P-FLIGHT,XP(D)::QAB1(B),XB(a)
      • B(a);N_GUARD::R1(A),XB(a)
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