MESON Chess Problem Database

Problem Display
PID: 57936 (2R5/3p1p2/b2P1Rp1/1N1kn1Q1/6p1/1Pr1p1K1/2B1P3/Bn3N2 w - - 0 1)

Dobbs, Gilbert S

The Chess Review, 1936

2R5/3p1p2/b2P1Rp1/1N1kn1Q1/6p1/1Pr1p1K1/2B1P3/Bn3N2

#2

11 + 10

56 The Problemist 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2
      • 2.Qxe5#
    • 1...Rxb3
      • 2.Qxe5#
    • 1...Rd3
      • 2.Qxe5#
    • 1...Rc4
      • 2.Sxe3#
      • 2.Qxe5#
      • 2.bxc4#
    • 1...Rc5
      • 2.Sxe3#
      • 2.Qxe5#
    • 1...Rc6
      • 2.Qxe5#
  • Tries
    • 1.Sxc3+?
      • 1...Kd4
        • 2.Rf4#
        • 2.Qxe3#
        • 2.Qf4#
      • 1...Sxc3!
    • 1.Bxc3?
      • threat
        • 2.Sxe3#
        • 2.Qxe5#
      • 1...Sxc3
        • 2.Sxe3#
      • 1...Bxc8!
  • Keys
    • 1.Qxe3!
      • threat
        • 2.Be4#
      • 1...Rxe3+
        • 2.Sxe3#
      • 1...Rxc2
        • 2.Qd4#
        • 2.Qxe5#
      • 1...Rd3
        • 2.Rc5#
      • 1...Rc4
        • 2.Qxe5#
      • 1...Sd2
        • 2.Sxc3#
      • 1...Sd3
        • 2.Qd4#
      • 1...Sf3
        • 2.Qe4#
      • 1...Sc4
        • 2.Rc5#
      • 1...Sc6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • R(b);XB(C)::QAR1(H),XS(f)
    • R(b);XP(E)::QAR1(H),XS(f)
    • R(b);::QAR1(H),XS(f)
  • Tries
    • Try
      • S(G);CHECK,XR(b)
      • Refutation
        • S(a);XS(G)
    • Try
      • B(A);XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XB(A)::S(B),XP(c)
      • Refutation
        • B(g);XR(K)
  • Actual
    • Q(H);N_PINS(f),P_SPINQ(H),XP(c)
    • Threat
      • B(C)
    • Vars
      • R(b);CHECK,XQ(H)::S(B),XR(b)
      • R(b);N_GUARD::R1(K)
      • R(b);N_PINQ(H)::QAR1(H),XS(f)
      • S(a);N_GUARD::S(G),XR(b)
      • S(f);N_PINQ(H)::QAR1(H)
      • S(f);N_PINQ(H)::QAB1(H)
      • S(f);S_CUTR(b)::R1(K)
      • S(f);SBLOCK,S_CUTR(b)::S(G)
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