MESON Chess Problem Database

Problem Display
PID: 53084 (3n4/3n4/1r1p2R1/1p2k3/1N1Nrp2/QPp1P2K/2B4B/4R3 w - - 0 1)

Jacobs, Charles Sumner

Comm., Christian Science Monitor, 1951

3n4/3n4/1r1p2R1/1p2k3/1N1Nrp2/QPp1P2K/2B4B/4R3

#2

10 + 9

268 Chess Life 1954

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3+
      • 2.Sf3#
    • 1...Rxd4
      • 2.exf4#
    • 1...Sf6
      • 2.Rg5#
    • 1...Sc6
      • 2.Re6#
    • 1...Se6
      • 2.Rxe6#
    • 1...Sb7
      • 2.Re6#
    • 1...Sf7
      • 2.Re6#
    • 1...d5
      • 2.Sd3#
  • Tries
    • 1.Kg4?
      • threat
        • 2.Sf3#
      • 1...Rxd4
        • 2.exf4#
      • 1...Sf6+!
    • 1.Sbc6+?
      • 1...Kd5
        • 2.Rxd6#
        • 2.Qxd6#
      • 1...Sxc6
        • 2.Qxd6#
      • 1...Rxc6!
    • 1.Reg1?
      • threat
        • 2.R1g5#
      • 1...Se6
        • 2.Rxe6#
      • 1...Sf7
        • 2.Re6#
      • 1...Rxe3+!
  • Keys
    • 1.Qa7!
      • 1...Rxe3+
        • 2.Sf3#
      • 1...Rxd4
        • 2.exf4#
      • 1...Ra6
        • 2.exf4#
      • 1...Rc6
        • 2.exf4#
      • 1...Rb7
        • 2.exf4#
      • 1...Rb8
        • 2.exf4#
      • 1...Sc5
        • 2.Qg7#
      • 1...Sf6
        • 2.Rg5#
      • 1...Sb8
        • 2.Qg7#
      • 1...Sf8
        • 2.Qg7#
      • 1...Sc6
        • 2.Re6#
      • 1...Se6
        • 2.Rxe6#
      • 1...Sb7
        • 2.Re6#
      • 1...Sf7
        • 2.Re6#
      • 1...d5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(b);CHECK,P_SPINR(b),XP(F)::S(I)
    • R(b);SBLOCK,XS(I)::R(A)+P(F)DCHECK,XP(c)
    • S(h);SBLOCK::R(J)
    • S(i);N_GUARD::R1(J)
    • S(i);N_GUARD::R1(J),XS(i)
    • P(g);SBLOCK::S(H)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • S(I)
      • Vars
        • R(b);SBLOCK,XS(I)::R(A)+P(F)DCHECK,XP(c)
      • Refutation
        • S(h);CHECK
    • Try
      • S(H);CHECK
      • Vars
        • S(i);XS(H)::QAB1(D),XP(g)
      • Refutation
        • R(f);XS(H)
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • S(i);N_GUARD::R1(J),XS(i)
        • S(i);N_GUARD::R1(J)
      • Refutation
        • R(b);CHECK,XP(F)
  • Actual
    • Q(D);
    • Vars
      • R(b);CHECK,P_SPINR(b),XP(F)::S(I)
      • R(b);SBLOCK,XS(I)::R(A)+P(F)DCHECK,XP(c)
      • R(f);::P(F),XP(c)
      • S(h);OGATE::QAB(D)
      • S(h);SBLOCK::R(J)
      • S(i);N_GUARD::R1(J)
      • S(i);N_GUARD::R1(J),XS(i)
      • P(g);SBLOCK::S(H)
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