MESON Chess Problem Database

Problem Display
PID: 193836 (q4B2/4R1pb/7b/2p2P2/2Pk2KN/r1pP1p2/p4R2/Qn2N1n1 w - - 0 1)

Marshall, Burney Means

Chess News, 1916

q4B2/4R1pb/7b/2p2P2/2Pk2KN/r1pP1p2/p4R2/Qn2N1n1

#2

10 + 12

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4+
      • 2.Rxe4#
    • 1...Qa4
      • 2.Re4#
    • 1...Qa5
      • 2.Re4#
    • 1...Qa6
      • 2.Re4#
    • 1...Qa7
      • 2.Re4#
    • 1...Qb8
      • 2.Re4#
    • 1...Qc8
      • 2.Re4#
    • 1...Qd8
      • 2.Re4#
    • 1...Qxf8
      • 2.Re4#
    • 1...Bc1
      • 2.Bxg7#
    • 1...Bd2
      • 2.Bxg7#
    • 1...Be3
      • 2.Bxg7#
    • 1...Bxf5+
      • 2.Sxf5#
  • Tries
    • 1.Rd2?
      • threat
        • 2.Sc2#
      • 1...Qe4+
        • 2.Rxe4#
      • 1...Bxf5+
        • 2.Sxf5#
      • 1...Bxd2
        • 2.Bxg7#
      • 1...Qa4
        • 2.Re4#
      • 1...Sxd2!
  • Keys
    • 1.Re3!
      • threat
        • 2.Sc2#
      • 1...Qe4+
        • 2.Rxe4#
      • 1...Bxf5+
        • 2.Sxf5#
      • 1...Kxe3
        • 2.Bxc5#
      • 1...Bxe3
        • 2.Bxg7#
      • 1...Qa4
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(l);CHECK,N_GUARD::R1(I),XQ(l)
    • Q(l);N_GUARD::R1(I)
    • Q(l);N_GUARD,P_PINP(H)::R1(I)
    • Q(l);N_GUARD,XB(J)::R1(I)
    • B(i);N_GUARD::B(J),XP(j)
    • B(k);CHECK,XP(H)::S(G),XB(k)
  • Tries
    • Try
      • R(C);
      • Threat
        • S(B)
      • Vars
        • Q(l);CHECK,N_GUARD::R1(I),XQ(l)
        • B(k);CHECK,XP(H)::S(G),XB(k)
        • B(i);N_GUARD,XR(C)::B(J),XP(j)
        • Q(l);N_GUARD::R1(I)
      • Refutation
        • S(a);XR(C)
  • Actual
    • R(I);
    • Threat
      • S(B)
    • Vars
      • Q(l);CHECK,N_GUARD::R1(I),XQ(l)
      • B(k);CHECK,XP(H)::S(G),XB(k)
      • K(g);N_SPINP(e),S_FLIGHT,XR(I)::B(J),XP(h)
      • B(i);N_GUARD,SBLOCK,XR(I)::B(J),XP(j)
      • Q(l);N_GUARD::R1(I)
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