MESON Chess Problem Database

Problem Display
PID: 90050 (3K2BB/Q7/N4R2/2N2Pb1/b2kpR2/4p1q1/1pr1P3/8 w - - 0 1)

Reddmann, Hauke

Die Schwalbe, 2006

3K2BB/Q7/N4R2/2N2Pb1/b2kpR2/4p1q1/1pr1P3/8

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Sxe4#
    • 1...Ke5
      • 2.Rxe4#
    • 1...Rc3
      • 2.Rxe4#
    • 1...Rxc5
      • 2.Qxc5#
    • 1...Bxf4
      • 2.Rd6#
    • 1...Bxf6+
      • 2.Bxf6#
    • 1...Bh6
      • 2.Rd6#
  • Tries
    • 1.Kc8?
      • threat
        • 2.Rd6#
      • 1...Rxc5+
        • 2.Qxc5#
      • 1...Kc3
        • 2.Sxe4#
      • 1...Ke5
        • 2.Rxe4#
      • 1...Bxf6
        • 2.Bxf6#
      • 1...Bd7+!
    • 1.Sb3+?
      • 1...Kc3
        • 2.Qd4#
        • 2.Qc5#
      • 1...Ke5!
    • 1.Sd3+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...Kc3!
    • 1.Sxa4+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...Ke5!
    • 1.Sxe4+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...Ke5!
    • 1.Sd7+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...Kc3!
    • 1.Qd7+?
      • 1...Kc3
        • 2.Sxa4#
        • 2.Sxe4#
      • 1...Ke5
        • 2.Rxe4#
        • 2.Qd6#
      • 1...Bxd7!
    • 1.Qe7?
      • threat
        • 2.Rd6#
      • 1...Bxf6
        • 2.Bxf6#
        • 2.Qxf6#
      • 1...Kc3!
  • Keys
    • 1.Kc7!
      • threat
        • 2.Rd6#
      • 1...Rxc5+
        • 2.Qxc5#
      • 1...Kc3
        • 2.Sxe4#
      • 1...Ke5
        • 2.Rxe4#
      • 1...Bxf6
        • 2.Bxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • K(f);N_SPINP(g),S_FLIGHT::S(C),XP(g)
    • K(f);N_SPINP(g),S_FLIGHT::R1(B),XP(g)
    • R(b);SBLOCK::R1(B),XP(g)
    • R(b);OGATE,P_SPINR(b),XS(C)::QAB1(G),XR(b)
    • B(h);N_PINR(F),N_SPINP(g),XR(B)::B(J)+R(F),DCHECK
    • B(h);CHECK,OGATE,P_SPINB(h),XR(F)::B(J),XB(h)
    • B(h);N_PINR(F)::B(J)+R(F),DCHECK
  • Tries
    • Try
      • K(H);N_SPINR(F),P-FLIGHT,P_SPINS(C)
      • Threat
        • B(J)+R(F),DCHECK
      • Vars
        • R(b);CHECK,OGATE,P_SPINR(b),XS(C)::QAB1(G),XR(b)
        • K(f);N_PINS(C),N_SPINP(g),S_FLIGHT::S(C),XP(g)
        • K(f);N_SPINP(g),S_FLIGHT::R1(B),XP(g)
        • B(h);OGATE,P_SPINB(h),XR(F)::B(J),XB(h)
      • Refutation
        • B(e);CHECK
    • Try
      • S(C);CHECK
      • Refutation
        • K(f);N_SPINP(g),S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(G),XR(b)
      • Refutation
        • K(f);N_SPINP(g),S_FLIGHT
    • Try
      • S(C);CHECK,XB(e)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(G),XR(b)
      • Refutation
        • K(f);N_SPINP(g),S_FLIGHT
    • Try
      • S(C);CHECK,XP(g)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(G),XR(b)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(G),XR(b)
      • Refutation
        • K(f);N_SPINP(g),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Refutation
        • B(e);XQ(G)
    • Try
      • Q(G);N_SPINR(F)
      • Threat
        • B(J)+R(F),DCHECK
      • Refutation
        • K(f);N_SPINP(g),S_FLIGHT
  • Actual
    • K(H);N_SPINR(F),P_SPINR(B),P_SPINS(C),S_FLIGHT
    • Threat
      • B(J)+R(F),DCHECK
    • Vars
      • R(b);CHECK,OGATE,P_SPINR(b),XS(C)::QAB1(G),XR(b)
      • K(f);N_PINS(C),N_SPINP(g),S_FLIGHT::S(C),XP(g)
      • K(f);N_PINR(B),N_SPINP(g),S_FLIGHT::R1(B),XP(g)
      • B(h);OGATE,P_SPINB(h),XR(F)::B(J),XB(h)
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