MESON Chess Problem Database

Problem Display
PID: 63018 (5K2/1P1k1N2/N5p1/6rR/1r3P1B/Q2B4/8/3R4 w - - 0 1)

Deiss, Edward L

The Chess Review, 1937

5K2/1P1k1N2/N5p1/6rR/1r3P1B/Q2B4/8/3R4

#2

10 + 4

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qd6#
    • 1...Rb2
      • 2.Qd6#
    • 1...Rb3
      • 2.Qd6#
    • 1...Ra4
      • 2.Qd6#
    • 1...Rc4
      • 2.Qd6#
    • 1...Re4
      • 2.Qd6#
    • 1...Rxf4
      • 2.Qd6#
    • 1...Rbb5
      • 2.Qd6#
  • Tries
    • 1.Be4+?
      • 1...Ke6
        • 2.Rd6#
      • 1...Rd4
        • 2.Qe7#
      • 1...Rd5!
  • Keys
    • 1.Sd8!
      • threat
        • 2.Bb5#
        • 2.Bf5#
      • 1...Rxf4+
        • 2.Bf5#
      • 1...Rf5+
        • 2.Bxf5#
      • 1...Kd6
        • 2.Bf5#
      • 1...Kxd8
        • 2.Bc4#
      • 1...Rxb7
        • 2.Bf5#
      • 1...Rc4
        • 2.Bf5#
        • 2.Qe7#
      • 1...Rd4
        • 2.Qe7#
      • 1...Re4
        • 2.Bb5#
      • 1...Rbb5
        • 2.Bxb5#
        • 2.Bf5#
        • 2.Qe7#
      • 1...Rgb5
        • 2.Bxb5#
        • 2.Bf5#
      • 1...Rd5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • R(a);OGATE::QAR1(B)
    • R(a);OGATE,P_PINS(I),XP(D)::QAR1(B)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(d);S_FLIGHT::R1(A)
        • R(a);OGATE,P_SPINR(a)::QAR1(B)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • S(I);
    • Threat
      • DUALS(2)
    • Vars
      • R(a);CHECK,XP(D)::R(A)+B(C),DCHECK
      • R(b);CHECK::R(A)+B(C),DCHECK,XR(b)
      • K(d);P-FLIGHT,P_SPINR(a)::R(A)+B(C)
      • K(d);P-FLIGHT,P_SPINR(b),XS(I)::R(A)+B(C)
      • R(a);XP(H)::R(A)+B(C),DCHECK
      • R(a);OGATE::QAR1(B)
      • R(a);::R(A)+B(C),DCHECK
      • R(b);OGATE::R(F),XR(b)
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