MESON Chess Problem Database

Problem Display
PID: 118355 (2R3Kn/2bQ4/n2p4/3k2N1/3P4/1P1pP1Rp/2r2Pq1/7B w - - 0 1)

Rasmussen, Knud AK

Toronto Telegram, 1947

2R3Kn/2bQ4/n2p4/3k2N1/3P4/1P1pP1Rp/2r2Pq1/7B

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Bxf3#
    • 1...Qe4
      • 2.Bxe4#
    • 1...Rc6
      • 2.Qf5#
      • 2.Qe6#
    • 1...Ba5
      • 2.Qf5#
      • 2.Qe6#
    • 1...Bb6
      • 2.Qf5#
      • 2.Qe6#
    • 1...Bb8
      • 2.Qf5#
      • 2.Qe6#
    • 1...Bd8
      • 2.Qf5#
      • 2.Qe6#
    • 1...h2
      • 2.Bxg2#
  • Tries
    • 1.Sh7?
      • threat
        • 2.Sf6#
      • 1...Ke4
        • 2.Sf6#
        • 2.Qe6#
      • 1...Bd8
        • 2.Qf5#
      • 1...Rxf2!
    • 1.Rxg2?
      • threat
        • 2.Rg1#
        • 2.Rh2#
        • 2.Rg3#
        • 2.Rg4#
      • 1...Rxf2
        • 2.Rxf2#
      • 1...hxg2
        • 2.Bxg2#
      • 1...Rc1
        • 2.Rg1#
      • 1...h2
        • 2.Rg1#
        • 2.Rxh2#
        • 2.Rg3#
        • 2.Rg4#
      • 1...Sc5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sf6#
      • 1...Qxg3+
        • 2.Sxg3#
      • 1...Kxe4
        • 2.Qe6#
      • 1...Qxe4
        • 2.Rg5#
      • 1...Rxf2
        • 2.Sc3#
      • 1...Bd8
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(b);OGATE::B(A),XQ(b)
    • P(d);N_GUARD::B(A),XQ(b)
  • Tries
    • Try
      • S(G);P_SPINR(E)
      • Threat
        • S(G)
      • Vars
        • B(h);::QAR2(H)
      • Refutation
        • R(a);XP(B)
    • Try
      • R(E);XQ(b)
      • Threat
        • DUALS(4)
      • Vars
        • R(a);OGATE,XP(B)::B(A)+R(E),XR(a)
        • P(d);N_SPINP(g),OGATE,P_SPINP(d),XR(E)::B(A),XP(d)
        • R(a);::B(A)+R(E)
      • Refutation
        • S(f);
  • Actual
    • S(G);N_PINQ(b),P_SPINR(E)
    • Threat
      • S(G)
    • Vars
      • Q(b);CHECK,XR(E)::B(A)+S(G),XQ(b)
      • K(e);N_SPINP(g),P_SPINQ(b),S_FLIGHT,XS(G)::QAR2(H)
      • Q(b);N_GUARD,N_PINR(E),P_SPINQ(b),XS(G)::R(E)
      • R(a);N_GUARD,XP(B)::S(G)
      • B(h);::QAR2(H)
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