MESON Chess Problem Database

Problem Display
PID: 233908 (8/B2R3P/1N6/3P4/3k1K2/R1r1p1p1/2B2b2/2Q5 w - - 0 1)

Hannemann, Knud Harald

Skakbladet, 1943

8/B2R3P/1N6/3P4/3k1K2/R1r1p1p1/2B2b2/2Q5

#2

9 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Rd3#
      • 2.Qd1#
      • 2.h8Q#
      • 2.h8B#
  • Tries
    • 1.Rxc3?
      • threat
        • 2.Sa4#
        • 2.Rc4#
        • 2.h8Q#
        • 2.h8B#
      • 1...Be1
        • 2.Sa4#
        • 2.Rc4#
        • 2.Qxe3#
        • 2.h8Q#
        • 2.h8B#
      • 1...Bg1
        • 2.Sa4#
        • 2.Rc4#
        • 2.h8Q#
        • 2.h8B#
      • 1...e2
        • 2.Sa4#
        • 2.Rc4#
        • 2.Qd2#
        • 2.h8Q#
        • 2.h8B#
      • 1...g2
        • 2.Sa4#
        • 2.Rc4#
        • 2.h8Q#
        • 2.h8B#
      • 1...Kxc3!
    • 1.Ra4+?
      • 1...Rc4
        • 2.Rxc4#
      • 1...Kc5!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Qxc3#
      • 1...Kxd3
        • 2.Qd1#
      • 1...Kc5
        • 2.Qxc3#
      • 1...Rxc1
        • 2.Sc4#
      • 1...Rxa3
        • 2.Qc4#
      • 1...Rxd3
        • 2.Sa4#
        • 2.Sc4#
        • 2.Sa8#
        • 2.Sc8#
        • 2.Ra4#
        • 2.Qc4#
        • 2.h8Q#
        • 2.h8B#
      • 1...Rc5
        • 2.h8Q#
        • 2.h8B#
      • 1...Rc2
        • 2.Sc4#
      • 1...Rb3
        • 2.Qc4#
      • 1...Rc4
        • 2.Sxc4#
        • 2.Qxc4#
      • 1...Rc6
        • 2.dxc6#
      • 1...Rc7
        • 2.h8Q#
        • 2.h8B#
      • 1...Rc8
        • 2.Sxc8#
      • 1...Be1
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);XR(b)
      • Threat
        • DUALS(4)
      • Refutation
        • K(e);S_FLIGHT,XR(C)
    • Try
      • R(C);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::R1(C),XR(b)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • B(B);
    • Threat
      • QAB1(A),XR(b)
    • Vars
      • K(e);OGATEB,P-FLIGHT,P_SPINR(b),XB(B)::QAR2(A)
      • K(e);P_SPINR(b),S_FLIGHT::QAR2(A),XR(b)
      • R(b);XQ(A)::B(G)+S(F)
      • R(b);OGATE,XR(C)::QAR1(A)
      • R(b);::P=Q
      • R(b);::B(G)+S(F)
      • R(b);OGATE::QAR1(A)
      • R(b);OGATE::R(H)+P(E),XR(b)
      • R(b);N_GUARD::B(G)+S(F),XR(b)
      • B(a);N_GUARD::QAB1(A),XP(c)
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