MESON Chess Problem Database

Problem Display
PID: 182 (2Rn2B1/4N3/2b1r3/1p4N1/1Bkp3R/P1n2p2/2P1pP2/b3Q2K w - - 0 1)

Sanderse, Jacobus Theodorus

1st HM., Match: Netherlands - USA, 1950

2Rn2B1/4N3/2b1r3/1p4N1/1Bkp3R/P1n2p2/2P1pP2/b3Q2K

#2

11 + 10

SOLUTION

  • SOUND
  • Tries
    • 1.Se4?
      • threat
        • 2.Sd2#
        • 2.Sd6#
      • 1...Sb1
        • 2.Sd6#
      • 1...Sd5
        • 2.Sd2#
      • 1...Sb7
        • 2.Sd2#
      • 1...Sf7
        • 2.Sd2#
      • 1...Sxe4!
    • 1.Sxe6?
      • threat
        • 2.Rxd4#
      • 1...Sxe6
        • 2.Rxc6#
      • 1...Sb1
        • 2.Sxd8#
      • 1...Sd1
        • 2.Sxd8#
      • 1...Sa2
        • 2.Sxd8#
      • 1...Sa4
        • 2.Sxd8#
      • 1...Se4
        • 2.Sxd8#
      • 1...Sd5!
    • 1.Bxe6+?
      • 1...Sd5
        • 2.Bxd5#
      • 1...Sxe6!
  • Keys
    • 1.Sxf3!
      • threat
        • 2.Rxd4#
      • 1...Sb1
        • 2.Qxe2#
      • 1...Sd1
        • 2.Qxe2#
      • 1...Sa2
        • 2.Qxe2#
      • 1...Sa4
        • 2.Qxe2#
      • 1...Se4
        • 2.Se5#
      • 1...Sd5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);N_PINP(f)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::S(H)
        • S(c);N_SPINR(i)::S(H)
        • S(j);::S(H)
        • S(j);N_SPINR(i)::S(H)
      • Refutation
        • S(c);XS(H)
    • Try
      • S(H);XR(i)
      • Threat
        • R1(G),XP(f)
      • Vars
        • S(j);N_GUARD,P_SPINS(j),XS(H)::R(J),XB(h)
        • S(c);N_GUARD::B(K)+S(H),XS(j)
        • S(c);N_GUARD,N_SPINP(f)::B(K)+S(H),XS(j)
      • Refutation
        • S(c);
    • Try
      • B(K);CHECK,XR(i)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::B(K),XS(c)
      • Refutation
        • S(j);XB(K)
  • Actual
    • S(H);P_SPINS(H),XP(d)
    • Threat
      • R1(G),XP(f)
    • Vars
      • S(c);N_GUARD::QAB(A),XP(b)
      • S(c);N_PINS(H),N_SPINP(f)::S(H)
      • S(c);N_PINS(H),N_SPINR(i)::S(H)
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