MESON Chess Problem Database

Problem Display
PID: 287465 (2N5/3N3B/3P3p/1K1k1P2/2R2brr/1pPqpPp1/8/3Q1b2 w - - 0 1)

Servais, Albert

2/3 Prize, To Mat, 1963

2N5/3N3B/3P3p/1K1k1P2/2R2brr/1pPqpPp1/8/3Q1b2

#2

10 + 10

15601 Albrecht-Leiss-Degener Collection 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Qxd4#
    • 1...Rg8
      • 2.Bxg8#
    • 1...Bg2
      • 2.Qxd3#
    • 1...Bh3
      • 2.Qxd3#
    • 1...Be5
      • 2.Sdb6#
    • 1...Bg5
      • 2.Bg8#
    • 1...Bxd6
      • 2.Scb6#
    • 1...e2
      • 2.Qxd3#
  • Tries
    • 1.Kb4?
      • threat
        • 2.Rc5#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Be5
        • 2.Sdb6#
      • 1...Bg5
        • 2.Bg8#
      • 1...Bxd6+!
    • 1.Ka5?
      • threat
        • 2.Rc5#
      • 1...Bxd6
        • 2.Scb6#
      • 1...Kxc4!
    • 1.fxg4?
      • threat
        • 2.Bg8#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Rxg4!
  • Keys
    • 1.Ka4!
      • threat
        • 2.Rc5#
      • 1...Kxc4
        • 2.Qxb3#
      • 1...Bxd6
        • 2.Scb6#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Be5
        • 2.Sdb6#
      • 1...Bg5
        • 2.Bg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(c);OGATE::QAR1(A),XQ(c)
    • R(g);N_GUARD::B(I),XR(g)
    • B(a);N_GUARD::QAR2(A),XQ(c)
    • B(f);SBLOCK::S(H)
    • B(f);S_CUTR(g)::B(I)
    • B(f);SBLOCK,XP(G)::S(J)
    • P(d);S_CUTB(a)::QAR2(A),XQ(c)
  • Tries
    • Try
      • K(E);N_SPINR(D),P-FLIGHT
      • Threat
        • R1(D)
      • Vars
        • Q(c);OGATE,P_PINR(D)::QAR1(A),XQ(c)
        • B(f);P_PINR(D),SBLOCK::S(H)
        • B(f);P_PINR(D),S_CUTR(g)::B(I)
      • Refutation
        • B(f);CHECK,P_PINR(D),XP(G)
    • Try
      • K(E);N_SPINR(D),P-FLIGHT
      • Threat
        • R1(D)
      • Vars
        • B(f);SBLOCK,XP(G)::S(J)
      • Refutation
        • K(i);N_SPINQ(c),S_FLIGHT,XR(D)
    • Try
      • P(C);XR(g)
      • Threat
        • B(I)
      • Vars
        • Q(c);OGATE::QAR1(A),XQ(c)
      • Refutation
        • R(h);XP(C)
  • Actual
    • K(E);N_SPINR(D),S_FLIGHT
    • Threat
      • R1(D)
    • Vars
      • K(i);N_SPINQ(c),OGATEB,S_FLIGHT,XR(D)::QAB1(A),XP(b)
      • B(f);P_PINR(D),SBLOCK,XP(G)::S(J)
      • Q(c);OGATE,P_PINR(D)::QAR1(A),XQ(c)
      • B(f);P_PINR(D),SBLOCK::S(H)
      • B(f);P_PINR(D),S_CUTR(g)::B(I)
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