MESON Chess Problem Database

Problem Display
PID: 134874 (3RK3/1p1N2p1/1p6/1P1k1p2/2p4N/B1PP2P1/2PPB1R1/4r2Q w - - 0 1)

Kolodnas, Zelikas

Die Schwalbe, 1928

3RK3/1p1N2p1/1p6/1P1k1p2/2p4N/B1PP2P1/2PPB1R1/4r2Q

#2

14 + 7

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2+
      • 2.Rxe2#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Sf4#
        • 2.Sc5#
        • 2.Sdf8#
      • 1...Rxe2+
        • 2.Rxe2#
      • 1...Ke6
        • 2.Sf4#
      • 1...Rf1
        • 2.Sc5#
        • 2.Sdf8#
      • 1...f4
        • 2.Sxf4#
        • 2.Sc5#
        • 2.Sdf8#
      • 1...cxd3!
    • 1.Qxe1?
      • threat
        • 2.Bf3#
      • 1...Ke6
        • 2.Bf3#
      • 1...cxd3!
    • 1.dxc4+?
      • 1...Ke4
        • 2.Bd3#
        • 2.Bf3#
        • 2.Rg1#
      • 1...Ke6!
  • Keys
    • 1.d4!
      • threat
        • 2.Sc5#
      • 1...Rxe2+
        • 2.Rxe2#
      • 1...Ke4
        • 2.Bf3#
        • 2.Rg1#
      • 1...Ke6
        • 2.Bxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(a);CHECK,OGATE,XB(D)::QAB(A)+R(E),XR(a)
  • Tries
    • Try
      • S(J);
      • Threat
        • DUALS(3)
      • Vars
        • R(a);CHECK,OGATE,XB(D)::QAB(A)+R(E),XR(a)
        • K(c);N_PINB(D),S_FLIGHT::S(J)
      • Refutation
        • P(b);XP(H)
    • Try
      • Q(A);N_SPINB(D),XR(a)
      • Threat
        • B(D)
      • Vars
        • K(c);S_FLIGHT::QAR(A)+B(D)
      • Refutation
        • P(b);XP(H)
    • Try
      • P(H);CHECK,XP(b)
      • Refutation
        • K(c);N_PINB(D),S_FLIGHT
  • Actual
    • P(H);
    • Threat
      • R(M)+S(L)
    • Vars
      • R(a);CHECK,OGATE,XB(D)::QAB(A)+R(E),XR(a)
      • K(c);N_PINB(D),S_FLIGHT::B(D),XP(b)
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