MESON Chess Problem Database

Problem Display
PID: 2148 (1Q1rRBK1/2ppP3/8/3k4/P5P1/3r3N/2N1P1R1/7B w - - 0 1)

Brown, WJN

Source?, 0000

1Q1rRBK1/2ppP3/8/3k4/P5P1/3r3N/2N1P1R1/7B

#2

12 + 5

2794 Terms & Themes of Chess Problems 1907

SOLUTION

  • SOUND
  • Tries
    • 1.Rg1+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kc5
        • 2.Qxc7#
        • 2.Qb4#
      • 1...Ke5
        • 2.exd8Q#
        • 2.exd8B#
      • 1...Kd6
        • 2.exd8Q#
        • 2.exd8S#
        • 2.exd8B#
        • 2.exd8R#
      • 1...Ke6
        • 2.exd8Q#
        • 2.exd8B#
      • 1...Rf3!
    • 1.Rf2+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kc5
        • 2.Qxc7#
        • 2.Qb4#
      • 1...Ke5
        • 2.exd8Q#
        • 2.exd8S#
        • 2.exd8B#
        • 2.exd8R#
      • 1...Kd6
        • 2.exd8Q#
        • 2.exd8S#
        • 2.exd8B#
        • 2.exd8R#
      • 1...Ke6
        • 2.exd8Q#
        • 2.exd8S#
        • 2.exd8B#
        • 2.exd8R#
      • 1...Rf3!
    • 1.Rh2+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kc5
        • 2.Qxc7#
        • 2.Qb4#
      • 1...Ke5
        • 2.exd8Q#
        • 2.exd8B#
      • 1...Kd6
        • 2.exd8Q#
        • 2.exd8S#
        • 2.exd8B#
        • 2.exd8R#
      • 1...Ke6
        • 2.exd8Q#
        • 2.exd8B#
      • 1...Rf3!
    • 1.Rg3+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kc5
        • 2.Qxc7#
        • 2.Qb4#
      • 1...Ke5
        • 2.exd8Q#
        • 2.exd8B#
      • 1...Kd6
        • 2.exd8Q#
        • 2.exd8S#
        • 2.exd8B#
        • 2.exd8R#
      • 1...Ke6
        • 2.exd8Q#
        • 2.exd8B#
      • 1...Rf3!
    • 1.Qb5+?
      • 1...Ke4
        • 2.Qf5#
        • 2.exd8Q#
        • 2.exd8S#
        • 2.exd8B#
        • 2.exd8R#
      • 1...Kd6
        • 2.exd8Q#
        • 2.exd8S#
        • 2.exd8B#
        • 2.exd8R#
      • 1...Ke6
        • 2.exd8Q#
        • 2.exd8B#
      • 1...c5!
  • Keys
    • 1.e4+!
      • 1...Kc4
        • 2.Qb4#
      • 1...Kxe4
        • 2.Re2#
      • 1...Kc5
        • 2.Qxc7#
      • 1...Ke5
        • 2.exd8Q#
        • 2.exd8B#
      • 1...Kc6
        • 2.exd8S#
      • 1...Kd6
        • 2.exd8S#
      • 1...Ke6
        • 2.exd8Q#
        • 2.exd8B#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(I)
        • K(b);P-FLIGHT,P_SPINP(c)::PXR(e)=Q
        • K(b);S_FLIGHT::PXR(e)=Q
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • R(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(I)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • R(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(I)
        • K(b);P-FLIGHT,P_SPINP(c)::PXR(e)=Q
        • K(b);S_FLIGHT::PXR(e)=Q
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • R(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(I)
        • K(b);P-FLIGHT,P_SPINP(c)::PXR(e)=Q
        • K(b);S_FLIGHT::PXR(e)=Q
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);S_FLIGHT::PXR(e)=Q
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • P(C);CHECK
    • Vars
      • K(b);S_FLIGHT::QAR1(I)
      • K(b);S_FLIGHT,XP(C)::B(A)+R(D),DCHECK
      • K(b);P-FLIGHT::QAR2(I),XP(c)
      • K(b);P-FLIGHT,P_SPINP(c)::PXR(e)=Q
      • K(b);S_FLIGHT::PXR(e)=S
      • K(b);P-FLIGHT,P_SPINP(c)::PXR(e)=S
      • K(b);S_FLIGHT::PXR(e)=Q
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