MESON Chess Problem Database

Problem Display
PID: 159420 (8/1P2p2b/3PP2p/b1pk2pR/Q5B1/1PP1nP1N/7B/2K1R3 w - - 0 1)

Supp, Walter

Neue Osnabrucker Zeitung, 2000

8/1P2p2b/3PP2p/b1pk2pR/Q5B1/1PP1nP1N/7B/2K1R3

#2

13 + 8

15391 Problemschach-Jahrbuch (2000) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qxe4#
      • 2.fxe4#
    • 1...Bg8
      • 2.Qe4#
    • 1...Sc4
      • 2.bxc4#
    • 1...Sf5
      • 2.Qe4#
    • 1...c4
      • 2.Qb5#
  • Tries
    • 1.Rd1+?
      • 1...Bd3
        • 2.Rxd3#
        • 2.Qe4#
      • 1...Sxd1!
    • 1.Rxg5+?
      • 1...Bf5
        • 2.Qe4#
      • 1...Sf5
        • 2.Qe4#
      • 1...hxg5!
    • 1.dxe7?
      • threat
        • 2.Qd7#
      • 1...c4
        • 2.Qb5#
      • 1...Sc4
        • 2.bxc4#
      • 1...Sf5
        • 2.Qe4#
      • 1...Bc7!
    • 1.b8Q?
      • threat
        • 2.Qb7#
        • 2.Qa8#
      • 1...c4
        • 2.Qab5#
        • 2.Qbb5#
      • 1...Bf5!
  • Keys
    • 1.Qd7!
      • threat
        • 2.dxe7#
      • 1...exd6
        • 2.Qxd6#
      • 1...c4
        • 2.Qb5#
      • 1...Bc7
        • 2.dxc7#
      • 1...Sc4
        • 2.Sf4#
      • 1...Sf5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(h);N_GUARD::QAB1(H)
    • S(a);OGATE::P(D),XS(a)
    • S(a);N_SPINP(e),S_CUTB(h)::QAB1(H)
    • P(c);OGATEB::QAR2(H)
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • S(a);XR(B)
    • Try
      • R(J);CHECK,XP(e)
      • Vars
        • B(h);P_SPINB(h)::QAB1(H)
        • S(a);P_SPINS(a)::QAB1(H)
      • Refutation
        • P(f);XR(J)
    • Try
      • P(K);XP(g)
      • Threat
        • QAR2(H)
      • Vars
        • P(c);OGATEB::QAR2(H)
        • S(a);OGATE::P(D),XS(a)
        • S(a);N_SPINP(e),S_CUTB(h)::QAB1(H)
      • Refutation
        • B(b);
    • Try
      • P(M);
      • Threat
        • DUALS(2)
      • Refutation
        • B(h);N_SPINP(e)
  • Actual
    • Q(H);
    • Threat
      • QAR(H)+P(K),XP(g)
    • Vars
      • P(g);OGATE,XP(K)::QAR1(H),XP(g)
      • P(c);OGATEB::QAR2(H)
      • B(b);OGATE::QAR(H)+P(K),XB(b)
      • S(a);::S(G)
      • S(a);N_SPINP(e),OGATE::R1(B)
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