MESON Chess Problem Database

Problem Display
PID: 57863 (4r3/4p2B/R1N2P2/2p2P1Q/p1r1k2P/1n1R4/1nPp2N1/B2b1K2 w - - 0 1)

Jacobs, Charles Sumner

Chess Life, 1958

4r3/4p2B/R1N2P2/2p2P1Q/p1r1k2P/1n1R4/1nPp2N1/B2b1K2

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc2
      • 2.Qe2#
      • 2.Qf3#
    • 1...Be2+
      • 2.Qxe2#
    • 1...Bf3
      • 2.Qxf3#
    • 1...Bg4
      • 2.Qxg4#
    • 1...exf6
      • 2.Qxe8#
    • 1...e5
      • 2.fxe5 ep#
    • 1...e6
      • 2.fxe6#
  • Keys
    • 1.Sb4!
      • threat
        • 2.Re6#
      • 1...Be2+
        • 2.Qxe2#
      • 1...Ke5
        • 2.Re6#
      • 1...Sxd3
        • 2.cxd3#
      • 1...exf6
        • 2.Qxe8#
      • 1...Sd4
        • 2.Re3#
      • 1...e5
        • 2.fxe5 ep#
      • 1...e6
        • 2.fxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(a);CHECK,N_GUARD::QAR2(H),XB(a)
    • B(a);N_GUARD::QAB1(H),XB(a)
    • B(a);N_GUARD::QAR2(H),XB(a)
    • P(i);OGATEB,XP(K)::QAR(H),XR(j)
    • P(i);OGATE::B(L)+P(G),XP(i),EP
    • P(i);OGATE::B(L)+P(G),XP(i)
  • Actual
    • S(J);
    • Threat
      • R(I)
    • Vars
      • B(a);CHECK,N_GUARD::QAR2(H),XB(a)
      • K(g);P-FLIGHT,P_SPINS(b)::R1(I)
      • S(b);OGATE,XR(E)::P(C),XS(b)
      • P(i);OGATEB,XP(K)::QAR(H),XR(j)
      • S(d);SBLOCK::R1(E)
      • P(i);OGATE::B(L)+P(G),XP(i),EP
      • P(i);OGATE::B(L)+P(G),XP(i)
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