MESON Chess Problem Database

Problem Display
PID: 153352 (5Q2/1p3N2/8/3pN1p1/3k4/2p2R2/1r3P1K/4RbB1 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1946

5Q2/1p3N2/8/3pN1p1/3k4/2p2R2/1r3P1K/4RbB1

#2

8 + 7

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Re2
      • 2.Qb4#
    • 1...Rxf2+
      • 2.Bxf2#
    • 1...Bg2
      • 2.Rd3#
    • 1...Bd3
      • 2.Rxd3#
    • 1...Bh3
      • 2.Rd3#
    • 1...g4
      • 2.Rf4#
  • Tries
    • 1.Re2?
      • threat
        • 2.Rd3#
      • 1...Rxe2
        • 2.Qb4#
      • 1...Rd2
        • 2.Qb4#
      • 1...Bxe2!
    • 1.Re4+?
      • 1...dxe4
        • 2.Qd6#
      • 1...Kxe4!
    • 1.Qb4+?
      • 1...Bc4
        • 2.Rd3#
      • 1...Rxb4!
  • Keys
    • 1.Rg3!
      • threat
        • 2.Rg4#
      • 1...Rxf2+
        • 2.Bxf2#
      • 1...Re2
        • 2.Qb4#
      • 1...Be2
        • 2.f3#
      • 1...Bg2
        • 2.Rd3#
      • 1...Bd3
        • 2.Rxd3#
      • 1...Bh3
        • 2.Rd3#
      • 1...c2
        • 2.f4#
      • 1...g4
        • 2.Rxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD,S_CUTB(a)::QAR2(H)
    • R(b);CHECK,OGATE,P_SPINR(b),XP(C)::B(B),XR(b)
    • B(a);N_GUARD,N_PINP(C)::R1(E)
    • B(a);N_GUARD::R1(E),XB(a)
    • B(a);N_GUARD::R1(E)
    • P(f);N_GUARD::R(E)
  • Tries
    • Try
      • R(A);N_SPINP(C)
      • Threat
        • R1(E)
      • Vars
        • R(b);N_GUARD,P_PINP(C),XR(A)::QAR2(H)
        • R(b);N_GUARD::QAR2(H)
      • Refutation
        • B(a);XR(A)
    • Try
      • R(A);CHECK
      • Vars
        • P(e);SBLOCK,XR(A)::QAR2(H)
      • Refutation
        • K(d);P-FLIGHT,XR(A)
    • Try
      • Q(H);CHECK
      • Vars
        • B(a);P_SPINB(a)::R1(E)
      • Refutation
        • R(b);N_PINP(C),XQ(H)
  • Actual
    • R(E);
    • Threat
      • R(E)
    • Vars
      • R(b);CHECK,OGATE,P_SPINR(b),XP(C)::B(B),XR(b)
      • R(b);N_GUARD,S_CUTB(a)::QAR2(H)
      • B(a);N_PINP(C)::B(B)+P(C)
      • B(a);N_GUARD,N_PINP(C)::R1(E)
      • B(a);N_GUARD::R1(E),XB(a)
      • B(a);N_GUARD::R1(E)
      • P(c);N_PINP(C)::B(B)+P(C)
      • P(f);::R(E),XP(f)
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