MESON Chess Problem Database

Problem Display
PID: 184835 (4R3/1p6/7n/1PPN1p2/QBrkPP2/2p2RPK/2P5/2n4B w - - 0 1)

van Dijk, Johannes

Western Daily Mercury, 1908

4R3/1p6/7n/1PPN1p2/QBrkPP2/2p2RPK/2P5/2n4B

#2

13 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb4
      • 2.Qxb4#
    • 1...Rxc5
      • 2.Bxc3#
    • 1...Sa2
      • 2.Rd3#
    • 1...Se2
      • 2.Rd3#
    • 1...Sb3
      • 2.Rd3#
    • 1...Sd3
      • 2.Rxd3#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Rd8#
      • 1...Rxb4
        • 2.Qxb4#
      • 1...Rxc5
        • 2.Bxc3#
      • 1...Sf7!
    • 1.Rd8?
      • threat
        • 2.Sxc3#
        • 2.Sf6#
      • 1...Kxe4
        • 2.Sf6#
        • 2.Rd3#
      • 1...Rxb4
        • 2.Qxb4#
      • 1...Rxc5
        • 2.Bxc3#
      • 1...Sf7!
  • Keys
    • 1.Se7!
      • 1...Kxe4
        • 2.Rd3#
      • 1...Rxb4
        • 2.Qxb4#
      • 1...Rxc5
        • 2.Bxc3#
      • 1...fxe4
        • 2.Rd8#
      • 1...Sg4
        • 2.Sxf5#
      • 1...Sa2
        • 2.Rd3#
      • 1...Se2
        • 2.Rd3#
      • 1...Sb3
        • 2.Rd3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sf7
        • 2.Sxf5#
      • 1...Sg8
        • 2.Sxf5#
      • 1...b6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE,P_SPINR(c),XB(G)::QAR2(F),XR(c)
    • R(c);SBLOCK,XP(K)::QAR(F)+B(G),DCHECK,XP(b)
    • S(a);N_GUARD::R1(C)
    • S(a);N_GUARD::R1(C),XS(a)
  • Tries
    • Try
      • S(L);
      • Threat
        • R(M)
      • Vars
        • R(c);OGATE,P_SPINR(c),XB(G)::QAR2(F),XR(c)
        • R(c);SBLOCK,XP(K)::QAR(F)+B(G),DCHECK,XP(b)
      • Refutation
        • S(f);
    • Try
      • R(M);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);OGATE,P_SPINR(c),XB(G)::QAR2(F),XR(c)
        • R(c);SBLOCK,XP(K)::QAR(F)+B(G),DCHECK,XP(b)
      • Refutation
        • S(f);
  • Actual
    • S(L);
    • Vars
      • K(d);P-FLIGHT,XP(H)::B(A)+R(C)
      • R(c);OGATE,P_SPINR(c),XB(G)::QAR2(F),XR(c)
      • R(c);SBLOCK,XP(K)::QAR(F)+B(G),DCHECK,XP(b)
      • P(e);SBLOCK,XP(H)::R(M)
      • S(f);N_GUARD::S(L),XP(e)
      • S(a);N_GUARD::R1(C)
      • S(a);N_GUARD::R1(C),XS(a)
      • P(g);N_GUARD::S(L)
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