MESON Chess Problem Database

Problem Display
PID: 109394 (4b2r/QB1P1Pp1/1p2kNR1/3p1RBP/8/8/8/4K3 w - - 0 1)

Simonsen, Andreas

Nationaltidende, 1941

4b2r/QB1P1Pp1/1p2kNR1/3p1RBP/8/8/8/4K3

#2

10 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se4+?
      • 1...Kxd7
        • 2.Ba6#
      • 1...Kxf5!
    • 1.Sg4+?
      • 1...Kxd7
        • 2.Ba6#
      • 1...Kxf5!
    • 1.Sxd5+?
      • 1...Kxd7
        • 2.Ba6#
      • 1...Kxf5!
    • 1.Sh7+?
      • 1...Kxd7
        • 2.Ba6#
      • 1...Kxf5!
    • 1.Sxe8+?
      • 1...Kxd7
        • 2.Ba6#
        • 2.Rxd5#
        • 2.Rd6#
      • 1...Kxf5!
    • 1.Sg8+?
      • 1...Kxd7
        • 2.Ba6#
      • 1...Kxf5!
    • 1.Bxd5+?
      • 1...Kd6
        • 2.Se4#
      • 1...Ke7
        • 2.Sh7#
      • 1...Kxf5!
    • 1.dxe8Q+?
      • 1...Kxf5
        • 2.Bc8#
      • 1...Kd6
        • 2.Qxb6#
      • 1...Rxe8!
    • 1.dxe8R+?
      • 1...Kxf5
        • 2.Bc8#
      • 1...Kd6
        • 2.Qxb6#
      • 1...Kxf7
        • 2.Bxd5#
        • 2.Ba6#
        • 2.Bc6#
        • 2.Ba8#
        • 2.Bc8#
      • 1...Rxe8!
  • Keys
    • 1.Bc8!
      • threat
        • 2.dxe8S#
      • 1...Kxf5
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Kd6
        • 2.Se4#
      • 1...Ke7
        • 2.Sh7#
      • 1...Kxf7
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Bxd7
        • 2.Qxd7#
      • 1...Bxf7
        • 2.d8Q#
        • 2.d8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT,XP(I)::QAR(G)+B(H)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT,XP(I)::QAR(G)+B(H)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
    • Try
      • S(E);CHECK,XP(a)
      • Vars
        • K(c);S_FLIGHT,XP(I)::QAR(G)+B(H)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT,XP(I)::QAR(G)+B(H)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
    • Try
      • S(E);CHECK,XB(e)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT,XP(I)::QAR(G)+B(H)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
    • Try
      • B(H);CHECK,XP(a)
      • Vars
        • K(c);P-FLIGHT::R(F)+S(E),DCHECK
        • K(c);P-FLIGHT::B(C)+S(E)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
    • Try
      • P(I);CHECK,XB(e)
      • Vars
        • K(c);S_FLIGHT,XR(B)::B(H)
        • K(c);P-FLIGHT::QAR2(G),XP(b)
      • Refutation
        • R(f);XQ(I)
    • Try
      • P(I);CHECK,XB(e)
      • Vars
        • K(c);S_FLIGHT,XR(B)::B(H)
        • K(c);P-FLIGHT::QAR2(G),XP(b)
      • Refutation
        • R(f);XR(I)
  • Actual
    • B(H);
    • Threat
      • PXB(e)=S
    • Vars
      • K(c);S_FLIGHT,XR(B)::PXB(e)=Q
      • K(c);P-FLIGHT::R(F)+S(E),DCHECK
      • K(c);P-FLIGHT::B(C)+S(E)
      • K(c);S_FLIGHT,XP(J)::PXB(e)=Q
      • B(e);OGATE,P_SPINB(e),XP(I)::QAB1(G),XB(e)
      • B(e);N_GUARD,XP(J)::P=Q
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